The Swiss Federal Department of Foreign Affairs (FDFA) and the German Federal Foreign Office advice against non-essential travel to Tanzania.

Following the presidential and parliamentary elections on 28–29 October 2025, several cities have experienced protests and violent clashes, notably in Dar es Salaam and Arusha. These incidents have resulted in fatalities, property damage, and authorities may impose curfews. 

In Macapá (state Amapá) and Ibititá (state Bahia) several cases of foodborne Chagas infection have been confirmed.

Chagas is endemic in Brazil. Foodborne transmission with periodic outbreaks are linked to the consumption of contaminated artisanal products—such as açaí, bacaba, and sugarcane juice—and is associated with higher parasite loads and more severe acute illness.

According to media, there is an unusual, significant spring increase in Influenza A and respiratory viruses in multiple regions, including Santiago, Biobío (Concepción), and Chiloé.

There are warnings regarding system overload of Emergency services in Chile from increased respiratory consultations, but most cases are mild; severe cases and ICU occupancy remain lower than in winter.

Influenza continues to cause nationwide, multi-regional outbreaks, with activity spreading from southern to northern provinces. The surge has led to school closures in many areas and hospitals operating beyond capacity in several provinces. Influenza A (H3N2) remains the dominant strain, and authorities warn of further escalation during winter.

Since January 2025, Cape Verde has reported 56 malaria cases, with most occurring in September and October. Of these, 23 cases (41%) are classified as imported, while investigations continue to determine potential locally transmitted cases. No details on malaria species were provided. The rainy season (July–October) coincides with increased mosquito breeding, elevating the risk of transmission.

In addition, in October 2024, a resident of Praia, Cape Verde was diagnosed with malaria in Portugal.

Although Cape Verde was certified malaria-free in January 2024, the recent cases raise concerns about the potential re-establishment of local transmission.

Rabies has been confirmed in Cape fur seals (Arctocephalus pusillus) along the Western and Northern Cape coasts of South Africa since May 2024 (Figure 1).

As of January 2025, there have been a total of 55 laboratory-confirmed rabies cases in South African seals, with 39 from the Western Cape and 16 from the Northern Cape.

In June 2025, the first case of rabies was confirmed at the Walvis Bay lagoon in Namibia, see EpiNews 23 June 2025.

This marks the first reported outbreak of rabies with ongoing seal-to-seal transmission in marine mammals. Retrospective testing suggests rabies has been present in seals since at least August 2022.

According to media citing the Ministry of Health, Costa Rica reported its first yellow fever case since 1956 on 12 October 2025. The patient is a 29-year-old American woman who had recently traveled to the Amazon region of Peru. She developed symptoms on 07 Oct and entered Costa Rica on 08 Oct without proof of yellow fever vaccination. Diagnostic confirmation was performed by the Costa Rican Institute for Research and Teaching in Nutrition and Health (INCIENSA).

Hong Kong: In October 2025, Hong Kong reported its first locally acquired chikungunya case and first death from the virus in a 77 year old male patient with chronic illnesses.

By 26 October, 46 cases had been confirmed—45 imported and one local fatal case—significantly higher than the usual 1–11 annual cases seen from 2016 to 2019.

Macao: As of 12 October 2025, a total of eight locally acquired chikungunya cases have now been reported in Macao for 2025.

This surge in reported chikungunya coincides with a major outbreak in 2025 in Guangdong Province, China, where 16’452 local cases were reported across 21 cities, including 10’032 cases in Foshan and 5’209 in Jiangmen—the largest chikungunya outbreak ever recorded in China.

Japan: According to media, Japan is experiencing an unusually early and intense influenza epidemic, with over 4’000 hospitalizations reported by early October 2025. The outbreak has caused widespread school closures and put significant pressure on healthcare facilities, especially in urban hotspots like Tokyo and Okinawa.

According to Japanese health authorities, increasing international travel, climate change and a lack of exposure to the circulating virus, particularly for elderly people and young children.

Also China reports Influenza A(H3N2) outbreaks across southern China, with hospitals in several provinces operating beyond capacity.