The disease caused by a protozoan and spread by an insect is malaria malaria. The primary host is mosquitoes and the secondary host is humans. In addition to the four plasmodial species that infect humans, roughly 120 additional species infect various animals from reptiles to birds to higher apes. Jan 18, 2022 · Cysts actually spread through sexual transmission, insect vectors, etc that occurs because of ingestion of protozoa in cysts. Syphilis is a sexually-transmitted infection caused by the bacteria Treponema pallidum. This disease is caused by protozoan parasites belonging to the genus Plasmodium. Four Plasmodium spp. Some species cause more serious problems than others do. Malaria can be carried by mosquitoes in temperate climates, but the parasite disappears over the winter. schistosomiasis C The vectors of ________ are sand flies A. Cases caused by the most common of these species, P. vivax, P. This article aims to provide a comprehensive understanding of whether malaria is indeed a protozoan infection. May 20, 2022 · Malaria remains a vector-borne infectious disease that is still a major public health concern worldwide, especially in tropical regions. None of Protozoans are the animallike unicellular organisms which can cause many diseases Malaria is a disease caused by a parasite The parasite is transmitted to humans through the bites of infected mosquitoes The other options are incorrect as a virus causes dengue polio and measles Malaria is a disease caused by protozoan parasite called Plasmodium which is transmitted from person to person by the bite of an infected female Anopheles mosquito. Endemic range of yellow fever in Africa (2005) Endemic range of yellow fever in South America (2005) Mosquito-borne diseases or mosquito-borne illnesses are diseases caused by bacteria, viruses or parasites transmitted by mosquitoes. Dec 11, 2024 · Malaria is a life-threatening disease caused by parasites that are transmitted to people through the bites of infected female mosquitoes. falciparum, P. Symptoms of falciparum malaria arise 9–30 days after infection. 2K people helped report flag outlined malaria is the disease caused by protozoan Explore all similar answers arrow right heart outlined Nov 17, 2025 · Malaria is a serious relapsing infection in humans, characterized by periodic attacks of chills and fever, anemia, enlargement of the spleen, and often fatal complications. Some of the common protozoa-caused diseases are: Human beings Malaria, amoebic dysentery, etc. Malaria is caused by plasmodia—ancient, single-celled protozoans transmitted to humans by the bites of female Anopheles mosquitoes. Traditional malaria symptoms include fever, chills, headache, muscle aches and fatigue. The disease caused by a protozoan and spread by an insect is _________. This article provides an overview of malaria, including its causes, symptoms, diagnosis, treatment, and Nov 1, 2025 · Discusses how protists cause human disease. Only female Anopheles mosquitoes can spread malaria from one person to another. ovale, P. malariae. Unlike other pathogens, cultures do not identify protozoa. vivax – responsible for the majority of infections. The Zika virus is mainly spread by mosquitoes and can lead to serious birth defects Malaria spreads through the bite of a female Anopheles mosquito Itis caused by a protozoan called Plasmodium Here the mosquito acts as a vector Oct 14, 2025 · Mosquitoes are major disease carriers, with malaria—caused by Plasmodium protozoa spread by Anopheles mosquitoes—being particularly lethal. Study with Quizlet and memorize flashcards containing terms like The vector of Chagas disease is a _________ Mosquito Louse Bug Flea, The pathogen that causes malaria is a _________ Mosquito Bacteria Nematode Protozoa, Elephantiasis is a potential result of infection by Nematodes Protozoa Round worms Malaria and more. Jan 7, 2021 · Malaria has been recognised as a serious health problem since the earliest historical times. Plasmodia parasites have complex life cycles involving vertebrate and insect hosts (Figure 6-1). It is caused by one-celled parasites of the genus Plasmodium that are transmitted to humans by the bite of Anopheles mosquitoes. toxoplasmosis A The only helminth disease of humans spread by an insect vector is A. These organisms may remain in the human host for their entire life cycle, but many carry out part of their reproductive cycle in insects or other hosts. Diseases caused by Plasmodia (malaria), and three major trypanosomatid diseases [leishmaniasis, African Human Trypanosomiasis (HAT) and Chagas disease] represent a major public health concern in the tropics. Still, in these fundamental areas and others Mar 6, 2024 · Protozoan diseases, caused by single-celled organisms known as protozoa, represent a significant health concern worldwide. There are four species of Plasmodium protozoan that cause malaria in humans, with two – P. When engaged in a blood meal, an infected mosquito injects immature forms of the parasite into the host’s bloodstream. Malaria is a life-threatening disease caused by the Plasmodium parasite, which is transmitted to humans by the Anopheles mosquito. These microscopic parasites can infect various tissues and organs, leading to a range of diseases with diverse symptoms and outcomes. Malaria is the disease that is caused by a malarial parasite known as Plasmodium Itis a protozoan It is spread bya female Anopheles mosquito Dengue is a viral disease Aug 14, 2023 · Malaria is a disease caused by protozoa infection, a parasite in the plasmodium genus spread by female Anopheles mosquitoes, a carrier of the malaria parasite to humans when entering the forest Oct 5, 2017 · 43 answers 30. Rats spread some diseases such as typhus, plague and salmonellosis. Malaria is the disease which is caused by the spread of a protozoan - Plasmodium. Insect-borne diseases, including viral and bacterial infections, can be transmitted through bites. Plasmodium Protozoa Plasmodium protozoa cause malaria. What causes malaria? If you are bitten by a Plasmodium-infected Anopheles mosquito, you can get malaria. Once inside a host, they multiply and disrupt normal bodily functions, leading to a wide range of symptoms. Protozoa are a type of parasite. kala-azar E. Aedes aegypti is the main vector of the viruses that cause yellow fever and dengue. It is preventable and curable. Malaria: Protozoan Disease Spread by Insects Understanding different types of diseases, their causative agents, and how they spread is fundamental in biology and health studies. The disease chiefly affects lowland tropical regions, where conditions favor Anopheles mosquitoes, which carry the malaria parasite plasmodium. The parasite primarily attacks the internal organs like the spleen, liver, and Study with Quizlet and memorize flashcards containing terms like Please select the FALSE statement regarding arthropod vectors: 1. malariae Malaria Fact Sheet What is malaria? Malaria is a serious and sometimes fatal disease caused by the bite of a mosquito infected with one of four malaria blood parasites. The common species that cause this disease are – Plasmodium falciparum, P. There are many common and some not so common infections that are Jan 30, 2020 · Protozoan infections range from symptom-less to life-threatening and are caused by microscopic organisms that were formerly classified in the Kingdom Protozoa. Several different species of Plasmodium can infect mosquitoes. A. ovale and P. The disease is a major health problem in much of the tropics and subtropics. For example, mosquitoes are vectors of plasmodium, the cause of malaria. Trypanosomiasis The term Nov 11, 2024 · Malaria, caused by the Plasmodium protozoan and transmitted by Anopheles mosquitoes, is the leading insect-borne disease, affecting roughly 250 million people and resulting in around 2 million annual deaths. In this article, we will discuss what protozoan diseases are, their causes, symptoms, and treatment. These diseases are often transmitted through vectors, such as mosquitoes for malaria, and are frequently found in tropical climates. There are five species of Plasmodium that cause malaria in humans: P. Each condition affects the body differently. When a mosquito bites a person, it injects saliva containing the parasites into the Invertebrates spread bacterial, viral and protozoan pathogens by two main mechanisms. Syphilis was once treated by infecting the patient with the protozoa that causes malaria, Plasmodium falciparum. Hope it helps Please mark as brainlist Understanding Malaria: Causes, Symptoms, Diagnosis, and Prevention Malaria is a serious and sometimes life-threatening disease caused by parasites transmitted through the bites of infected mosquitoes. These parasites, called plasmodia, belong to at least five species. e. It is caused by the agent known as plasmodium vivax. The parasites are spread by a mosquito vector. This question focuses on identifying a disease that is caused by a protozoan and transmitted by an insect, often referred to as a vector-borne disease. Arthropods are very specific and always bite only one type of host 2. Malaria: Malaria is caused by any one of five species of Plasmodium spread by Anopheles mosquitoes that survive in and near human residences. fascioliasis C. The popular protozoa illnesses involve malaria transmitted by mosquitoes and amoebiasis associated with the intake of unclean water. Five species account for almost all human infections, with P falciparum being the most severe. It is a major global health issue, particularly in tropical and subtropical regions. Jun 20, 2025 · Communicable diseases spread through contact with bodily fluids, insect bites, contaminated surfaces, water, and food, or through the air. In fact Jun 9, 2013 · What is malaria? Malaria is a parasitic disease caused by protozoa of the genus Plasmodium. When a mosquito sucks human blood, it injects the sporozoite into the human blood which then resides in the human body and forms merozoite. These illnesses are caused by various pathogens, including bacteria, viruses, protozoa, and helminths, which are carried by arthropods such as mosquitoes, ticks, and fleas. Why isn't a similar strategy (the use of screens or mesh) emphasized as much during the waking hours?, Please move the correct terms into their corresponding empty boxes Most protist diseases in humans are caused by protozoa. Uninfected mosquito. Mar 27, 2025 · True or False Statement about Malaria The statement "Malaria is a parasitic disease spread by mosquitoes" is True. Understanding the causes, symptoms, and treatment options for human protozoan infections is crucial for effective disease Syphilis is a sexually-transmitted infection caused by the bacteria Treponema pallidum. Infected female mosquitoes are responsible for the spread of human disease. cause malaria in human beings, including P. Question: The disease caused by a protozoan and spread by an insect is (a) dengue (b) malaria (c) polio (d) measles Solution: (b) Malaria is the disease which is caused by the spread of a protozoan, i. Consider the Mode of Transmission: The disease must be spread by an insect. Protozoan disease refers to infections caused by unicellular parasites known as protozoa, which can replicate rapidly within a host and lead to illnesses such as giardiasis and malaria. When a mosquito bites a person infected with a malarial protozoan, the protozoan enters the mosquito. beaver fever B. It's the blood-seeking females that inject these Jan 1, 2021 · Protozoa are eukaryotic microbes that are responsible for several important human diseases. A bite from an infected mosquito passes the parasite to humans. 2. The various diseases caused by Protozoa in humans are transmitted through mosquito bites or dirty water. 4. knowlesi. Protozoan Causes and Insect Vectors A protozoan is a single-celled Background: battle of humans against malaria—past and present Malaria has been recognised as a serious health problem since the earliest historical times. aegypti only and dengue distribution in 2006. Research in recent decades has shed light on many aspects of Plasmodium biology, broadening understanding of how parasites interact with the human immune system, cause human disease, and are transmitted by mosquitoes. Malaria is a serious disease caused by a parasite that infects a certain type of mosquito. Malaria is spread by the bite of an infected female Anopheles mosquito. These microorganisms usually enter bodies via contaminated foods, water, or insect bites. (a) dengue (b) malaria (c) polio Prevalence of malaria in 2009. Which is NOT a method of transmission for medically important protozoa? Airborne droplets. Mar 1, 2024 · Malaria, a widespread and potentially deadly disease, is caused by the Plasmodium parasite. vivax, P. They are microscopic and can be found in various environments, […] May 20, 2022 · Malaria remains a vector-borne infectious disease that is still a major public health concern worldwide, especially in tropical regions. Prevention of protozoan diseases involves strategies to reduce the risk of infections caused by single-celled eukaryotic organisms known as protozoa. Jun 12, 2021 · Cause: Trypanosoma brucei. Protozoans are the animallike unicellular organisms which can cause many diseases Malaria is a disease caused by a parasite The parasite is transmitted to humans through the bites of infected mosquitoes The other options are incorrect as a virus causes dengue polio and measles Malaria is a disease caused by protozoan parasite called Plasmodium which is transmitted from person to person by the bite of an infected female Anopheles mosquito. Nov 17, 2025 · Malaria is a very common disease in some countries and is spread through mosquito bites of mosquitoes that have been infected by one of the many different malaria-causing parasites. falciparum and P. The disease caused by a protozoan and spread by an insect is C. Since untreated malaria can progress to severe forms that may be rapidly (<24 hours) fatal, malaria should always be considered in patients who have a history of exposure (mostly: past travel or residence in Diseases spread through Insects: Mosquitoes spread malaria as they are the carriers of protozoan Plasmodium. See also entamoeba; Giardia lamblia; sleeping sickness. Identify the Type of Organism: The question asks for a disease caused by a protozoan. The symptoms usually include tiredness, vomiting, fever and headaches. Via insect vectors. It is caused by a protozoan named Plasmodium vivax. Less common diseases include African trypanosomiasis and Amoebic dysentery. The malaria parasites enter that person's bloodstream and travel to the liver. Apr 14, 2022 · giardiasis disease caused by Giardia protozoa that spreads through contaminated food or water malaria disease caused by Plasmodium protozoa and transmitted by mosquitoes in tropical and subtropical regions of the world ringworm skin infection caused by the fungus Trichophyton that causes a characteristic ring-shaped rash Introduction Sep 25, 2025 · Malaria, caused by the Plasmodium protozoan and transmitted by Anopheles mosquitoes, is the leading insect-borne disease, affecting roughly 250 million people and resulting in around 2 million annual deaths. hydatid disease E. Nearly all cases of malaria in the United States occur in people who have traveled to other countries. Plasmodium parasites spend several parts of their life cycle inside humans and another part inside Aug 11, 2020 · Answer: Option b Explanation: Disease caused by Protozoa is malaria . Some arthropods cause disease even when they do not act as a vector. The incidence of vector-borne diseases can be decreased by controlling the vector or the infected hosts. Vector: The protozoa are transmitted by the blood-sucking insect called tsetse fly (genus Glossina). Nearly 700 million people contract mosquito-borne illnesses each year, resulting protozoal disease caused by four strains of Plasmodium and transmitted by the bite of an infected female Anopheles mosquito A. Malaria is indeed a parasitic disease caused by protozoan parasites belonging to the genus Plasmodium. Although these ailments can (b) carbon dioxide (c) nitrogen (d) sulphur dioxide 6. Jan 3, 2025 · Malaria is a mosquito-borne infectious disease caused by the bite of female Anopheles mosquitoes, which spread infectious Plasmodium parasites into a host. Two other species of Plasmodia can stay Jan 7, 2021 · Malaria has been recognised as a serious health problem since the earliest historical times. , These Plasmodium life cycle stages must be ingested by a female Anopheles mosquito for the Plasmodium life cycle to continue in the mosquito. Some protozoa infect the gastrointestinal tract via ingestion and cause diarrheal disease. It is spread in healthy individuals by the bite of a female Anopheles mosquito carrying this Plasmodium in their mouth (saliva). Parasites enter a host’s blood through the bite of an infected mosquito. One species in particular (Plasmodium falciparum) can be life-threatening. In the United States, most infections are a result of travel to foreign countries though local transmission has occurred, particularly in states such Arthropod-borne illnesses are diseases transmitted through insect vectors, predominantly seen in tropical and subtropical regions. Jul 6, 2023 · What is it? Malaria is an infection caused by single-celled parasites that enter the blood through the bite of an Anopheles mosquito. The document discusses various protozoan diseases in humans, including malaria, amoebiasis, leishmaniasis, and others, detailing their causes, symptoms, diagnoses, and treatments. Abstract Evaluating the risk of emergence and transmission of vector‐borne diseases requires knowledge of the genetic and environmental contributions to pathogen transmission traits. , Which of the What is malaria? Malaria is a disease caused by a parasite. knowlesi. Malaria is a disease spread by an insect vector that is characterized by repeated cycles of fever, shaking, and chills. It explains the specific protozoa responsible for each disease and provides information on transmission modes and drug treatments. Other viruses, the causal agents of various types of encephalitis, are also carried by Aedes spp. The correct answer is Conceptual21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !! Jul 20, 2024 · Malaria is caused by a protozoan parasite named Plasmodium, and it is spread by the Anopheles (female) mosquito that causes acute life-threatening disease. Study with Quizlet and memorize flashcards containing terms like Humans develop malaria after the injection of Plasmodium ____________________ into the bloodstream by an infected female Anopheles mosquito when she takes a blood meal. From malaria to amoebiasis, these diseases can have debilitating effects on human health. Candiasis technical name for a yeast infection caused by Candida fungi Malaria A disease spread by mosquitoes infected with a protozoan parasite Plasmodium the group of protozoa that causes malaria Ringworm protozoal disease, disease caused by protozoan s. Diseases like dysentery and malaria are caused by protozoa. In humans, two types of this species can infect humans: Trypanosoma brucei gambiense (TbG) and Trypanosoma brucei rhodesiense (TbR). Why would this treatment control syphilis? Select all correct answers. (a) dengue (b) malaria (c) polio (d) measles Malaria is an infectious disease caused by species of single-celled parasites invading and destroying red blood cells. Plant diseases Wilt of oil Palm Plasmodium Protozoa Plasmodium protozoa cause malaria. It may cause liver and kidney failure along with shock. When a mosquito sucks human blood, it injects the sporozoite into the human blood which then resides in the human body and forms merozoite which are the major cause of malarial fever in humans. Malaria can be caused by several species of Plasmodium parasites, each of which has a complex life cycle (see illustration). Solution For Name the Protozoan and an insect which cause and spread Malaria disease in human beings. Plasmodium. Explanation: Malaria: Malaria is not a contagious disease. Chagas' disease C. Eating contaminated food. Humans become infected with malaria through the bite of a female mosquito belonging to the genus Anopheles. When an infected mosquito bites a human, it can introduce the parasite from its saliva into the person's blood. Malaria is common in tropical and subtropical climates Plasmodium, that causes malaria, the pathogen completes its life cycle in mosquito and humans. Mar 12, 2024 · Malaria is a disease caused by a parasite. It is primarily spread to humans through the bite of infected female Anopheles mosquitoes. , Which of the Diseases caused by protozoan parasites are called protozoal diseases. This means we need to think of diseases that are transmitted through insect bites. Giardia … Question 6 The disease caused by a protozoan and spread by an insect is ___. Many invertebrates are responsible for transmitting diseases. Other insect-borne diseases include dengue fever, Chagas disease, West Nile virus, and the plague. malariae, and P. These mosquitoes are found in the tropics and subtropics in almost all countries. falciparum (often referred to as falciparum malaria). filariasis D. Kala-azar, also known as visceral leishmaniasis, is a slow-progressing but serious disease caused by a protozoan parasite called Leishmania donovani. The causative protozoan is Plasmodium, and it is spread by Anopheles mosquitoes. Discover the types and symptoms of malaria, a serious disease spread by mosquitoes. Malaria is common in tropical and subtropical climates throughout the world (see Figure below). These are all transmission methods. Cockroaches are the carrier of disease such as dysentery and gastroentritis. Our understanding of the malaria parasites begins in 1880 with the discovery of the parasites in the blood 6 days ago · Protozoa diseases refer to an aggregate of diseases caused by protozoa, single-celled organisms that cannot be readily seen with the naked eye. Understanding the causes, symptoms, and treatment options for human protozoan infections is crucial for effective disease Malaria is a mosquito-borne infectious disease caused by protozoan parasites belonging to the genus Plasmodium. Feb 9, 2023 · Malaria spreads when a mosquito becomes infected with the disease after biting an infected person, and the infected mosquito then bites a noninfected person. In these cases Apr 4, 2025 · Malaria is an acute febrile illness caused by Plasmodium parasites, which are spread to people through the bites of infected female Anopheles mosquitoes. Malaria is caused by a protozoan parasite of the genus Plasmodium and transmitted through the bite of infected female Anopheles mosquitoes. [37] Oct 19, 2025 · Common protozoan infectious diseases include malaria, giardia, and toxoplasmosis. Clinical Presentation The symptoms of uncomplicated malaria can be rather non-specific and the diagnosis can be missed if health providers are not alert to the possibility of this disease. When the infected mosquito then bites another person, the protozoan enters that person's bloodstream. After the parasites get into the body by Jul 20, 2024 · Malaria is caused by a protozoan parasite named Plasmodium, and it is spread by the Anopheles (female) mosquito that causes acute life-threatening disease. Malaria is a mosquito-borne infectious disease caused by protozoan parasites belonging to the genus Plasmodium. Most notable A nervous system disease caused by a protozoan that results in sleep disturbances is ______. According to the World Health Organization, about one in six people globally may be affected Family Culicidae Mosquitoes in the genus Anopheles are the principle vectors of malaria, a disease caused by protozoa in the genus Plasmodium. What is malaria? Malaria is an infection by a microscopic protozoa called Plasmodium. Protozoa make humans sick when they become human parasites. Treatment removes the parasite from the blood. Malaria is caused by the Plasmodium protozoan and is transmitted by the bite of infected Anopheles mosquitoes. It is spread to humans through the bites of infected female Anopheles mosquitoes. Learn about treatment options and potential complications if untreated. It is a major worldwide health concern where immunocompromised persons, children, and pregnant women have the highest morbidity and mortality rates. giardiasis Malaria is caused by five related protozoan parasites spread by the bite of infected female Anopheles mosquitoes. African sleeping sickness B. These microscopic organisms can be transmitted through various means, including contaminated food and water, insect vectors, or direct contact. Was this solution helpful? Mar 23, 2024 · How Are Diseases Transmitted By Insects? Pathogens can be transmitted by insects through mechanical or biological methods. Dengue is another disease spread by the bite of Aedes mosquitoes, yellow fever is caused by the bite of Aedes ergypti mosquito. mosquitoes. What to Know About Protozoan Infections Protozoa are single-celled organisms that belong to the Protista kingdom. None of Step-by-Step Solution: 1. These viruses can impact various organisms such as animals, plants, marine life and humans. For example, thalassemia and sickle-cell Introduction Human protozoan infections, caused by single-celled organisms known as protozoa, pose significant health challenges worldwide. 3. Contact with contaminated feces. The most common worldwide is P. Most human infections are caused by either Plasmodium falciparum or Plasmodium vivax. Evaluate the Given Options: The Malaria is the disease which is caused by the spread of a protozoan, i. Most people get malaria when bitten by an infective mosquito carrying the malaria parasite. ascariasis B. Severe malaria is usually caused by P. Symptoms: Some of the most common symptoms of the disease include a headache, high fever, irritability, muscle and joint pain, and The Right option is: b malaria(a) Which of the following disease are protozoan in origin? Dengue, Malaria, Kala-azar and HIV -AIDS (b) Suggest any two ways to prevent being infected by protozoa. Question 6 The disease caused by a protozoan and spread by an insect is ___. Either via their bite, as in the case of malaria spread by mosquitoes, or via their faeces, as in the case of Chagas' Disease spread by Triatoma bugs or epidemic typhus spread by human body lice. Malaria, caused by the Plasmodium protozoan, is primarily spread by Anopheles mosquitoes. Protozoans are single-celled organisms that can cause various diseases in humans. Malaria is caused by infection with protozoan parasites belonging to the genus Plasmodium transmitted by female Anopheles species mosquitoes. malariae and P. To prevent amebiasis and giardiasis, individuals are advised to use bottled or Study with Quizlet and memorize flashcards containing terms like what are the two main categories of diseases?, what are 2 examples of non communicable diseases?, where do communicable diseases come from? and more. Malaria, for example, is the world’s most important parasitic disease especially when Plasmodium falciparum is the causative agent. Compared to the significant effort devoted to understanding the biology of malaria transmission from vertebrate hosts to mosquito vectors, the strategies that malaria parasites have evolved to maximize Aug 1, 2024 · Highlights Diseases caused by insect-borne protozoan parasites, namely malaria, leishmaniasis, and trypanosomiasis, range from subclinical infections to severe illnesses in various hosts, including immunocompetent humans, with a profound impact on public health and economies worldwide. Malaria in humans is caused by five related protozoan (single-celled) parasites: Plasmodium falciparum, P. Protozoal diseases are illnesses caused by infections with parasitic protozoa. vivax. Mechanical vectors Oct 2, 2023 · Plasmodium falciparum (malaria), Trypanosoma brucei (African sleeping sickness), and Giardia lamblia (giardiasis) are examples of **protozoan parasites **that cause diseases in humans. Mosquitoes and tsetse flies serve as insect vectors for malaria and African sleeping sickness, respectively. The document serves as a comprehensive overview of the impact of protozoans on human . The strong negative pressure of the disease has likely forced the evolution of human populations in malaria endemic regions and the selection of some unique genetic variants. The parasites infect the host’s red blood cells, causing symptoms such as fever, joint pain, anemia, and fatigue. It is a vector-borne disease, meaning it is transmitted to humans through the bite of an infected insect, specifically the female sandfly (Phlebotomus argentipes). When the parasites mature, they leave the liver and infect red blood cells. May 19, 2023 · Malaria can also be transmitted from a mother to her unborn baby (congenitally) and by blood transfusions. falciparum, can be fatal if Study with Quizlet and memorize flashcards containing terms like One of the most effective strategies used to prevent the spread of malaria is to have people sleep under mosquito nets in areas with large numbers of mosquitoes. Nov 21, 2023 · Malaria is an infectious disease caused by a protozoan in the genus Plasmodium. Common protozoan diseases include amebiasis, giardiasis, malaria, trypanosomiasis, and toxoplasmosis, each with unique transmission methods and health impacts. Trypanosoma protozoa cause Chagas disease and sleeping sickness. Malaria It is a mosquito-borne protozoan infectious disease that affects both animals and humans.