immunology

CMV infects 60–80% of adults yet causes devastating harm in newborns and immunocompromised patients. Here's everything you need to know.

Adenovirus causes colds, pink eye and stomach bugs, survives on surfaces, and powers COVID and Ebola vaccines. How this hardy DNA virus works and why it matters.

How measles spreads, why it erases immune memory, what the MMR vaccine does, and why cases are rising, with 2024-2026 data from WHO, CDC, and PAHO.

How HIV infects CD4 T cells, hides in the genome, and why modern antiretroviral therapy suppresses it. Covers U=U, PrEP, cure cases, and 2025 global data.

Influenza virus explained: how flu infects cells, why it drifts and shifts, how vaccines are chosen, and why effectiveness swings from season to season.

From smallpox to COVID-19, vaccines are humanity's most powerful medical technology. Here's how we discovered them.

How structural understanding of antibodies revealed how immune system recognizes pathogens

How Karl Landsteiner discovered ABO blood groups enabling safe blood transfusions

How complement proteins amplify immune responses through coordinated molecular cascade activation

How germ theory revealed that microorganisms cause disease revolutionizing medicine and public health

Inside the T-cell receptor: the alpha/beta protein pincer that scans MHC-bound peptides, the thymic gauntlet that filters out self-reactive clones, and why this molecular handshake underlies CAR-T therapy.

ISS studies reveal how microgravity suppresses immune function, explaining increased infection risk in astronauts and informing immunology treatment strategies.