An infectious disease which is caused by Mycobacterium tuberculosis is called tuberculosis. It is a primary cause of death worldwide that is a potentially curable infectious disease. Death of HIV patients is mostly due to the secondary infection i.e. tuberculosis. The incidence of TB worldwide was decreased until the mid-1980s when HIV disease emerged. There … Read more
Entamoeba histolytica is a common parasite in the large intestine of humans, certain other primates and some other animals. This parasite is responsible to cause amoebiasis which is the third leading parasitic cause of death in the developing countries. Tropohozoites of this parasite are found in the mucous and sub-mucous layers of the large intestine … Read more
Gonococcus is considered to be a strict human parasite. Various attempts were done to infect animals. But all had failed until recently when chimpanzees have been experimentally infected. Gonococcus is generally found only in cases of acute, chronic or asymptomatic infection. But not found in healthy carriers like meningococccus. The latter may account for 70-80% … Read more
Group Virus Characteristics Clinical importance Retroviruses Human T-cell leukaemia virus(HTLV-1) Human immune deficiency virus (HIV) Spherical enveloped virus, 100nm in diameter Icosahedral cores contain two copies of linear RNA molecules and reverse transcriptase. Differs from other retroviruses … Read more