Virus Watcher Weekly 3 min read

Virus Watcher Weekly, August 2 to 9, 2026

Ebola outbreak in DRC escalates past 4,000 cases, prompting increased international aid and a stepped-up WHO response. Australia also faces a growing bird flu crisis.

VW

Virus Watcher Intelligence Desk

Written from CDC surveillance data and Virus Watcher outbreak feeds

Published 2026-08-09

The global health community is on high alert as the Ebola outbreak in the Democratic Republic of Congo (DRC) continues its rapid expansion. The outbreak has now surpassed 4,000 confirmed cases, making it the largest Bundibugyo virus disease outbreak ever recorded and the world's second-largest Ebola epidemic. This escalating crisis has prompted a visit from the head of the World Health Organization, urging an intensified response, with the United States committing over $500 million in total assistance.

Beyond the DRC, other significant health challenges emerged this week. Australia is grappling with a rapidly growing bird flu outbreak, with infections tripling in just seven days and mass bird deaths reported in a second state, signaling a potentially "long and difficult journey." Meanwhile, the United Kingdom has launched a free meningitis B vaccine program for a million young people, following concerns over the country's largest and fastest-growing outbreak earlier this year in Kent.

Emerging public health trends are also being monitored through wastewater surveillance, which detected notable increases in several pathogens. Specifically, Hepatitis A levels rose significantly by 122% this week, serving as an early indicator of community health shifts. Additionally, health officials in Michigan are investigating two deaths linked to cyclosporiasis, while a Salmonella outbreak tied to Mexican jalapeno peppers has sickened 345 people across 27 US states.

This week, Virus Watcher published 320 surveillance posts, with no system alerts triggered by automated monitors. The top reported diseases included cyclosporiasis, avian-influenza-h5n1, hepatitis-a-confirmed, measles-imported, and ebola, reflecting the diverse range of ongoing health concerns.

The week's top stories

  • An active Ebola outbreak is spreading in Congo, prompting the head of the World Health Organization to visit and urge a stepped-up response. The United States has committed over $242 million in additional aid, bringing total assistance to over $500 million. An active Ebola outbreak in Congo has triggered a high-level WHO visit and significant US aid, as the disease continues to spread.

  • The Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo continues to expand rapidly, with sustained transmission, persistently high mortality, and ongoing geographic spread. It is now the largest BVD outbreak ever recorded and the second largest Ebola disease outbreak in The largest ever recorded Bundibugyo virus disease outbreak, also the second-largest Ebola outbreak, is rapidly expanding in the DRC with high mortality.

  • 🚨 Australia Bird Flu Outbreak Grows as Infections Triple in a Week: Australia is facing a growing bird flu outbreak, with infections tripling in a week and mass bird deaths detected in a second state. The environment minister warns of a 'long and difficult journey' wi Australia faces a rapidly escalating bird flu outbreak, with infections tripling in a week and mass bird deaths detected in a second state.

  • Wastewater surveillance checks our community's sewage for signs of viruses and bacteria, giving us an early heads up on public health trends days or weeks before people might feel sick. This week, we are seeing notable increases in several pathogens. Hepatitis A is up significantly by 122%, and Can Wastewater surveillance detected notable increases in pathogens this week, including a significant 122% rise in Hepatitis A, providing early insights into public health trends.

  • Cases have passed 4,000 and health watchdog plans to go door to door to find patients in major response escalation The Ebola outbreak in the Democratic Republic of Congo has now surpassed 4,000 cases, prompting health officials to plan an escalated response, including door-to-door patient searches.

This week by the numbers: 320 surveillance items processed, 5 diseases active.

Previous week: Jul 26 · Next week: Aug 9 · All weeks

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