Epidemiology - Topics

Cancer clusters: when a neighborhood suspects its water Why is flu season a thing? R0 explained: how one number predicts an outbreak What is herd immunity and when does it fail? Measles: the most contagious virus known and why outbreaks are returning How did the Black Death reshape medieval Europe? What is the difference between quarantine and isolation? Wastewater surveillance: how sewage predicts the next outbreak Lab leak vs natural spillover: how do scientists trace a virus's origin? The gap between male suicide attempts and male deaths: what the numbers reveal Why counting comorbidities predicts outcomes better than any single diagnosis Deploying a field epidemiology team takes how many approvals? How does a microbe's infectious dose decide who actually gets sick? Why do viral diseases hit some populations much harder than others? Rodent reservoirs keep vector-borne pathogens circulating How many human pathogens originally came from animals Following patients for years in infectious disease cohort studies Why Nipah and Hendra outbreaks stay small while COVID did not Immortal time bias shows up in almost every observational vaccine study How many cancers worldwide are attributable to infections each year? How many people get sick from foodborne disease every year Why do women live longer than men in nearly every country? Why are mortality surveillance systems always weeks behind case counts? How do smoking and obesity rates shape national longevity rankings? The epidemic curve told us it was a point source before the interviews did Incubation period vs latent period: they are not the same thing Trials that allow only one condition exclude the patients who have several How do you measure whether a surveillance system is actually any good? How epidemiologists establish that an exposure really is a cause A risk factor that correlates with a disease is not automatically the cause How agent-based models simulate a pandemic without differential equations Sentinel GP networks miss everyone who never sees a doctor so how big is that blind spot?