Arizona: Measles Exposures in Phoenix and Flagstaff

Health officials in Arizona have confirmed measles exposures at three public locations in Maricopa and Coconino counties on November 5-6, 2025. Two separate individuals with infectious measles visited downtown Phoenix (Maricopa County) and Flagstaff (Coconino County), potentially exposing people, including attendees of a sold-out Tate McRae concert at the Mortgage Matchup Center in Phoenix. Public […]

Hong Kong Confirms First-Ever Local Chikungunya Cases

According to Hong Kong’s Centre for Health Protection, 3 laboratory-confirmed locally acquired cases of chikungunya have been reported since late October 2025 in Wong Tai Sin (2 cases) and Kwai Tsing (1 case) districts. Hong Kong has never reported locally acquired chikungunya cases before these infections. Health authorities have identified at least two distinct transmission […]

Last Year’s COVID Vaccines Did Their Job — Especially Against the Worst Outcomes

A new study in JAMA Internal Medicine shows that the 2024–25 COVID-19 vaccines continued to protect well against severe illness, even as immunity slowly waned over time. ✅ 57% protection against hospitalization and death at 4 weeks after vaccination ✅ 45% protection against ER visits and infections Protection drops over 5 months — strongest early […]

Italy Outbreaks: West Nile Virus and Chikungunya

Italy is currently facing simultaneous outbreaks of two significant mosquito-borne diseases: West Nile virus (WNV) and chikungunya virus (CHIKV). Travelers to Italy should be aware of both threats and take comprehensive insect precautions. West Nile Virus Outbreak According to Italy’s Ministry of Health, as of early October 2025, Italy has reported 718 confirmed cases of […]

Japanese Encephalitis Outbreak in Nepal

Nepal’s Ministry of Health has reported approximately 110 laboratory-confirmed Japanese encephalitis cases, including 21 deaths, since early August 2025 – a two-fold increase over normal levels. Cases are concentrated primarily in Lumbini Province but have been reported nationwide. While traveler risk remains minimal, this outbreak warrants increased awareness and preventive measures. While absolute risk to […]

Chikungunya Outbreak in Singapore, ongoing in France and Italy, Ixchiq® vaccine recalled.

Singapore Reports Surge in Cases Singapore is experiencing an outbreak of chikungunya cases, with over 20 reported infections since January 2025—double the typical rate. The outbreak continues to escalate with more than one case per week since early August, but health officials say it has not yet peaked. France Experiences First Chikungunya Outbreak According to […]

Uganda Cholera Outbreak

Uganda Cholera Outbreak: Uganda is experiencing a significant increase in cholera cases, with more than 100 cases reported in July 2025, primarily in Amaru District. Since January 2025, approximately 255 cholera cases have been reported, mainly concentrated in Amaru and Lamwo districts. The risk to general travelers remains MINIMAL. However, certain groups should take additional […]

Avian Influenza in Botswana

International health authorities have confirmed the first avian influenza A (H5N1) outbreak in poultry in Botswana’s Chobe District since 2021, reported in late July 2025. This highly pathogenic strain of bird flu represents a significant development for the southern African nation, which had remained free of H5N1 infections for several years following previous containment efforts. […]