Disease reference
General medical information, not advice. Last reviewed dates are shown on each page.
Plague — what it is
Plague is a serious bacterial infection caused by Yersinia pestis. It is treatable with antibiotics, and outcomes are best when treatment starts early.
Last reviewed 2026-10-07
Pneumonic plague — what it is
Pneumonic plague is the most serious form of plague and the only one that can spread between people. It is treatable with antibiotics, especially when caught early.
Last reviewed 2026-10-07
Measles — what it is
Measles is a highly contagious but vaccine-preventable viral disease that mainly affects children. Vaccination (MMR) is the safest protection.
Last reviewed 2026-10-07
Mpox — what it is
Mpox is a viral illness that usually causes a rash and flu-like symptoms. Most cases are mild, it can be serious for some people, and it is treatable.
Last reviewed 2026-10-07
Avian influenza (bird flu) — what it is
Avian influenza (bird flu) is an influenza A virus that circulates in wild birds and poultry. Human infections are uncommon and are closely monitored.
Last reviewed 2026-10-07