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Pandemiology Watch (August 12-18, 2026)

Our latest report covers data from August 12-18, 2026. This update provides an overview of communicable diseases, highlighting key trends, emerging outbreaks, and notable developments. We have included direct links to the sources referenced, allowing for deeper insight.
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    Ebola

    According to the INRB-UMIE BDBV on August 18, 2026, Epidemic Dashboard, the Bundibugyo Ebola outbreak in the Democratic Republic of the Congo has reached 4,566 confirmed cases and 2,128 confirmed deaths. Health authorities are also investigating 270 suspected cases and 91 suspected deaths. 

    According to the World Health Organization (WHO) on August 14, 2026, the Ebola outbreak caused by the Bundibugyo virus in the Democratic Republic of the Congo is now the largest Ebola outbreak ever recorded in the country. WHO says the outbreak is spreading rapidly, driven by insecurity, population displacement and mobility, as well as cross-border movements. The organization says attacks on health facilities are limiting access for response teams, discouraging people from seeking healthcare, disrupting surveillance and response activities, and increasing the risk of undetected transmission. WHO, national authorities, and international partners are expanding treatment centres, strengthening surveillance, increasing contact tracing, and working closely with communities to control the outbreak and prevent further spread.

     

    Measles

    US

    According to the American Academy of Pediatrics (AAP) on August 17, 2026, declining childhood vaccination rates in the United States are increasing the risk of disease outbreaks. More than 250,000 children started kindergarten last year without protection against measles, mumps, and rubella (MMR). The CDC reported a 17% increase in exemptions from mandatory school vaccinations. The AAP warned that current vaccination coverage is insufficient to prevent measles outbreaks. 

    As of August 14, 2026, the United States has reported 2,566 measles cases so far in 2026, according to the Center for Disease Control. In 2026, the age group 5-19 accounts for 48% of the cases (1,222), and children under 5 years account for 19% of the cases (497). Of the cases reported in 2026, 93% were unvaccinated or had an unknown vaccination status and 7% of the cases have been hospitalized (169). A total of 4,855 measles cases and three deaths have been reported to date. 

    Canada

    According to the Public Health Agency of Canada on August 17, 2026, Canada has reported 1,116 measles cases (1,035 confirmed and 81 probable) in 2026 as of August 8. 61% of the cases occurred in children (675). Manitoba accounts for 61% of the cases (679), and Alberta accounts for 28% of the cases (311) reported so far in 2026. 86% of the cases reported in 2026 were unvaccinated (960), and 7% required hospitalization. A total of 6,536 measles cases and two deaths have been reported to date.

     

    Influenza

    According to the Centers for Disease Control and Prevention on August 14, 2026, 191 pediatric influenza deaths have been reported in the United States during the 2025-2026 flu season. In the latest weekly influenza surveillance report, no additional child deaths linked to influenza was reported. 

    H5N1

    As of August 18, 2026, the Centers for Disease Control and Prevention has not reported any cases of person-to-person transmission of H5N1 in the United States. The total remains at 71 confirmed human cases and two deaths. 

     

    Mpox

    From August 12-18, 2026, there have been no significant updates on mpox outbreaks worldwide.