Articles on Outbreak

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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.
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.
The cruise ship MV Hondius sits anchored off Praia, the capital of Cape Verde, on May 5, 2026, before setting course for Spain on May 6. AFP via Getty Images

Health authorities work to contain cruise ship hantavirus outbreak

Hantavirus cases are usually rare, but the strain in the outbreak is the only one thought to be transmitted from person to person.
Multiple factors during an outbreak interact to raise the risk of exploitation and violence. Clovera/iStock via Getty Images

Financial strain, lockdowns and fear of infection during disease outbreaks magnify violence against women and girls − new research

Disease outbreaks can make women and girls especially vulnerable to violence, but health surveillance systems do a poor job tracking these trends.
Students and staff queue to receive antibiotics at the UK University of Kent after an outbreak of meningitis caused the deaths of two people. Carl Court/Getty Images

Recent outbreaks highlight the risks of bacterial meningitis – and the need to vaccinate

Teens and young adults are more likely to be asymptomatic carriers of the bacterium that cause meningococcal disease, making university students a high-risk group.
Swiss players warm up before a preliminary round match of women’s hockey against Finland at the 2026 Winter Olympics, in Milan, Italy on Feb. 10, 2026. After one player on the Swiss team tested positive for norovirus, the entire team entered precautionary isolation and missed the opening ceremony. (AP Photo/Darko Bandic) 

When norovirus hits the Olympics: The science behind the spread

Norovirus outbreaks at events like the Olympics are more than logistical setbacks. They reveal how the virus’s biology and the realities of mass gatherings make containment difficult.
A valve that mixed raw milk with pasteurized milk at Hillfarm Dairy may have been the source of contamination. This was the milk processing area of the plant. AP Photo/Mark Elias

Contaminated milk from one plant in Illinois sickened thousands with Salmonella in 1985 − as outbreaks rise in the US, lessons from this one remain true

The legal, political and public health consequences of the largest Salmonella outbreak in the US underscore the importance of food safety inspections and disease surveillance.
The Epidemic Intelligence Service has produced a cadre of highly trained public health experts over its 74-year history. peterhowell/iStock / Getty Images Plus via Getty Images

How the CDC’s Epidemic Intelligence Service protects public health at home and abroad

The Epidemic Intelligence Service has been a crucial tool in fighting diseases at home and abroad. Its impact would be impossible to replace.

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