Articles on Infectious diseases

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After nearly a year-long gap, the CDC again has a permanent director. James Gathany, Centers for Disease Control and Prevention via Wikimedia Commons

The CDC has a new director – now comes the hard part

Amid multiple disease outbreaks and intense political pressures, Director Erica Schwartz will need to defend scientific independence.
Cholera is common in parts of the world where clean water sources are unreliable. Sudan has suffered multiple outbreaks since the onset of a civil war in 2023. AFP via Getty Images

Cholera still kills thousands each year – in places without clean water, it’s far from history

While cholera launched modern epidemiology and has nearly disappeared in many countries, the disease never went away. It has instead retreated to the places least equipped to fight it.
Cyclosporiasis can cause severe gastrointestinal distress, including explosive diarrhea. wildpixel/iStock via Getty Images Plus

Cyclosporiasis sickens some people worse – why your diarrhea could be more explosive than others

Explosive diarrhea has been spreading across the US, and the parasite that causes the disease has already sickened thousands – and counting.
Canadian fans gather at Jack Poole Plaza in Vancouver on July 4, 2026, to watch Canada play Morocco during a World Cup round of 16 soccer match. THE CANADIAN PRESS/Ethan Cairns

How Canada’s vaccine infrastructure helped guard against infectious disease during the FIFA World Cup

The World Cup brought many visitors to Canada, which put public health authorities on alert for contagious illnesses. It’s crucial that Canada remain committed to infectious disease preparedness.
Pauses in data collection and staff cuts have affected many CDC databases. James Gathany, Centers for Disease Control and Prevention via Wikimedia Commons

From maternal health to influenza rates, gaps in CDC’s public health data are creating dangerous blind spots for disease tracking and prevention

By interfering with how communities collect data and how researchers access it, the CDC risks undermining the hard-won trust needed for effective public health.
Legionnaires wait to testify before a special congressional inquiry in November 1976 into the cause of the mysterious disease. Bettmann/Bettman Collection via Getty Images

Legionnaires’ disease outbreak in Philadelphia in 1976 was mysterious and deadly – 50 years later, scientists know the cause but outbreaks continue

The source was a newly discovered bacterium called Legionella pneumophila that can thrive in household pipes, whirlpools, cooling units and outdoor fountains.

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