Answer: Infectious hepatitis is most often caused by a virus. There are four commonly known hepatitis viruses, hepatitis A, B, C and D. Other hepatitis can be caused by bacteria, although less often. Still other forms of hepatitis are not caused by infectious agents at all, but by injury from toxins (such as alcohol, work chemicals, pollution, etc.) or other injury to the liver.
Answer: Malaria is caused by 1 of the 5 species of the plasmodium parasite. The five types of mosquitoes responsible for malaria are: Plasmodium falciparum,Plasmodium vivax, Plasmodium knowles,Plasmodium ovale and Plasmodium malariae. The mosquitoes infect humans and within weeks to months they grow and multiply in the body, eventually causing symptoms which can include fever, coma and death.
Answer: Amoebiasis refers to infection caused by the amoeba Entamoeba histolytica. IT is a gastrointestinal infection that may or may not be symptomatic and can remain latent in an infected person for several years, amoebiasis is estimated to cause 70000 deaths per year world wide.
Answer: is a highly contagious zoonosis caused by ingestion of unsterilized milk or meat from infected animals, or close contact with their secretions. Transmission from human to human, for example through sexual contact or from mother to child, is exceedingly rare, but possible Brucella spp. are small, Gram-negative, non-motile, non-spore-forming rods, which function as facultative intracellular parasites tact or from mother to child, is exceedingly rare.