Continued high risk trend in Kerala, India.

In 2025, over 300’000 dog bites and 33 rabies deaths have been reported, a five-year high. 

According to media, health authorities are raising concerns over a steady increase in chikungunya infections, with more than 400 cases reported since the start of 2026,

The chikungunya situation has intensified particularly during the week of Monday 9 to Friday 13 March. During this period, nearly 100 new cases were reported, an average of around 20 cases per day. This rapid increase is causing concern among health authorities, who are stepping up calls for vigilance among the public.

Data from the Ministry of Health indicates that the spread of the disease is mainly concentrated in certain regions of the country. Among the most affected areas are Rose-Hill, Plaisance, Stanley, Camp-Levieux, Mont-Roche and Roche-Brunes but isolated cases have also been reported in other places.

• Japan reported 236 confirmed measles cases from January to 08 Apr 2026, representing a 3.6-fold increase compared to 66 confirmed measles cases recorded during the same period in 2025.
  
• Tokyo had documented 109 cases by 13 Apr 2026, with 55 cases occurring in April alone; as of 08 Apr 2026, Tokyo had 72 cases—the cumulative total increased by 37 cases in just five days.
  
• Nationwide, the first 100 cases were reported by 08 Mar 2026, while the subsequent ~136 cases occurred over the following four weeks, indicating an acceleration in transmission.
  
• The majority of patients in Tokyo are aged 10–39 years.

England reports sustained increase in sexually transmitted shigellosis (S. sonnei, S. flexneri) among men who have sex with men (MSM) (25% increase from 2023 to 2025, and similar trend in 2026). Half of the cases are reported in London.

The outbreak features high antimicrobial resistance, with over half of S. sonnei isolates resistant to all three first-line treatments (ciprofloxacin, azithromycin, ceftriaxone), severely restricting options for serious cases and raising concerns about continued transmission within international sexual networks.

Im brasilianischen Bundesstaat Mato Grosso do Sul wurden bis Ende März 2026 insgesamt 4’281 wahrscheinliche Fälle von Chikungunya gemeldet, davon 2’102 laborbestätigt. Zusätzlich wurden zehn Todesfälle im Zusammenhang mit der Erkrankung bestätigt, die vor allem ältere Menschen, Säuglinge sowie Bewohner indigener Gemeinschaften in mehreren Gemeinden betrafen.
 

Between September 2022 and  March 2026, over 1’000 confirmed and possible cases of shigellosis and other gastrointestinal infections, including salmonellosis, have been detected in travellers returning from Cabo Verde to several countries in the European Union/European Economic Area (EU/EEA), the United Kingdom (UK), and the United States (US), with new cases still being reported.

Most cases of shigellosis and other gastrointestinal infections, including salmonellosis, were linked to a hotel chain in Santa Maria, Sal Island. The exact source is unknown, but food- or waterborne transmission is likely, with some person-to-person spread also possible.

On 24 Mar 2026, laboratory testing confirmed the presence of yellow fever virus in a deceased red howler monkey (Alouatta seniculus) in Trinidad, with no human cases reported.

The Ministry of Health carried out surveillance and vector control measures in affected areas after the detection.

Monkeys act as sentinel species for the environmental circulation of the yellow fever virus.

Since 2025, EU/EEA countries have seen a rise in dengue cases among travellers returning from the Maldives, though without increased severity. In 2026 so far, at least 46 imported cases have been reported across four countries, continuing a trend that intensified in late 2025. This mirrors a significant surge in dengue cases within the Maldives itself, with 631 cases reported in January 2026 compared to 72 in January 2025.

In 2025, the Robert Koch-Institute (RKI) reported five gonorrhea cases linked to travel in Asia, with pathogens confirmed as extensively drug-resistant (XDR) or multi-drug-resistant (MDR). The cases, recorded between May and December 2025 across various German states, involved men aged 23–50 presenting with symptomatic urethritis. Four infections were likely acquired through heterosexual contacts in Thailand, and one case in China. Two patients reported contact with a sex worker abroad.