Nipah virus is closely related to, but distinct from Hendra virus. Family: Paramyxoviridae Genus: Henipavirus History: A Nipah epidemic of viral encephalitis, complicated by respiratory…
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Microbiology
Novel Coronavirus Disease (CoViD-19) – “An Old Family with a New Disease”
Coronaviridae, one of the families of viruses which are known to cause diseases in mammals and birds ranging from the common cold to Severe Acute…
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Medical Significance of Bedbugs
Two species of bedbugs bite people: the common bedbug (Cimex lenticularis) and the tropical bedbug (Cimex hemipterous). These bugs are called udus (उडुस) in Nepali…
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Antigenic Shift and Drift
Antigenic Drift Nature of antigenic variation: Minor Mechanism: Gradual accumulation of amino acid substitutions due to point mutation in the hemagglutinin (H) and neuraminidase (N)…
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Bedside Cold Agglutinin Test for Mycoplasma
Definition of Cold Agglutinin Cold agglutinins are polyclonal IgM that have specificity against the I-antigen on red cells, and often there is light chain restriction,…
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Rickettsial Diseases Made Easy
Important features of Rickettsia and Rickettsial Diseases Obligate intracellular parasites like Chlamydia – can survive only in host cells Cannot produce their own ATP, so…
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Interpreting Hepatitis B Serology in 5 Easy steps
Hepatitis B surface antigen (HBsAg) Appears during incubation period (1-6 months), 2-7 weeks prior to symptoms. Peaks when the patient is most ill. Becomes undetectable…
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Polymerase Chain Reaction (PCR) Made Easy
What is Polymerase Chain Reaction ? It is a process of artificial DNA replication (amplification of a selected part of DNA). As the name suggests:…
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