With the start of the peak season of influenza and other respiratory viruses in the Southern Hemisphere of the Americas, PAHO/WHO recommends that Member States adjust their health service preparation and organization plans to address a potential health system overload.

Argentina, Bolivia, Brasil, Chile, Colombia, Paraguay, Perú, Uruguay, Venezuela, Ecuador

The state of Santa Catarina is well-known in Brazil for its countless natural beauties and attracts a large number of tourists from Brazil and other countries throughout the year. The growing number of cases of Dengue and Chikungunya in this state reinforces the need for greater attention to preventive measures among travelers. The Department of Epidemiological Surveillance (DIVE) of the State of Santa Catarina released an Epidemiological Report with data for the year 2025.

Brasil

In 2025, 72 cases have accumulated. The latest update (March 25, 2025) reports 12 new cases: two from 2024 and 10 from 2025. The clinical and epidemiological characteristics of the recent cases are similar to those of the previous cases. All cases with clade information belong to clade II.

España

A strong 7.7 magnitude earthquake struck northwestern Myanmar, causing significant damage in Mandalay and other regions. The quake was also felt in Bangkok, Thailand, and Yunnan, China.

Myanmar, Tailandia

Between January 1 and March 16, 2025, 131 confirmed cases of yellow fever in humans have been reported, of which 53 have resulted in death. These cases have been reported in: the Plurinational State of Bolivia, with one fatal case; Brazil with 81 cases, including 31 fatal cases; Colombia with 31 cases, including 13 fatal cases; and Peru with 18 cases, including eight fatal cases.

Bolivia, Brasil, Colombia, Perú

CDC has received five reports in the Vaccine Adverse Event Reporting System (VAERS) of hospitalizations for cardiac (e.g., atrial flutter) or neurologic (e.g., meningitis) events following vaccination with IXCHIQ (live attenuated chikungunya vaccine) among people 65 years of age and older. Many of the patients had significant underlying medical conditions.