Human Immunodeficiency Virus (HIV)

Human Immunodeficiency Virus (HIV)

Human Immunodeficiency Virus (HIV) What is HIV? HIV stands for ‘human immunodeficiency virus’. It weakens a person’s immune system by destroying important cells that fight against disease and infection. HIV is a member of the genus Lentivirus, part of the family Retroviridae. It is the causative agent of AIDS.  AIDS … Read more

Chicken Pox (Varicella-zoster virus)

Chicken Pox (Varicella-zoster virus)

What is chickenpox? Herpes virus (DNA) Primary infection results in varicella (chickenpox) Recurrent infection results in herpes zoster (shingles) Short survival in the environment Image Source: Wikipedia Structure VZV virions are spherical and 180–200 nm in diameter. Their lipid envelope encloses the 100 nm nucleocapsid Nucleocapsid has 162 hexameric and pentameric … Read more

Hepatitis C

Hepatitis C

Hepatitis is a liver infection. It is caused by the Hepatitis C virus which is a blood-borne virus. It is a short term illness but it can be asymptomatic until decades after the infection. Chronic Hepatitis C is a serious disease that can result in long term health problems and … Read more

Virology VIVA Question and Answer with mnemonics

Virology VIVA Question and Answer

1) What is the genome present inside the virus? Either DNA or RNA but not both. 2) What is the genome present in Coronavirus? RNA 3) Can we observe virus in general laboratory using a light microscope? No, they are too small whose size ranges from 20-250 nm in size. … Read more

Measles, Mumps, Rubella (MMR) and MMR Vaccine

Measles, Mumps, Rubella (MMR) and MMR Vaccine

Measles, Mumps, Rubella (MMR) and MMR Vaccine The MMR which is comprised of a 3 in 1 vaccine, is one of the recommended childhood immunizations. It protects children against three highly contagious Viruses which are as follows: Measles Mumps Rubella (German Measles) Image Source: NFID and CSC Pharmaceuticals Measles Definition … Read more

Poliovirus and Polio Vaccines

Poliovirus and Polio Vaccines

Poliovirus It is an infectious disease caused by poliovirus which affects the spinal cord and brain stem, it leads to paralysis and even leads to death. Poliovirus is the causative agent of poliomyelitis. Children under 5 years of age are more susceptible to this disease. Reservoir Human. Spread through feces. … Read more