ECDC regularly assesses new evidence on variants detected through epidemic intelligence, rules-based genomic variant screening or other scientific sources.
In 2024 and as of 30 of April, approximately 240 000 CHIKVD cases and over 90 deaths have been reported worldwide. A total of 18 countries reported CHIKVD cases from the Americas (11), Asia (6), and Africa (1).
Since the beginning of 2024, and as of 3 April, no MERS-CoV cases have been reported by WHO or national health authorities. The last reported case was in Saudi Arabia, with date of onset on 26 October 2023.
Risks of an adverse event following influenza vaccination are far less common than complications related to influenza itself, and the adverse events are generally localised and mild.
Injected trivalent inactivated influenza vaccines are most commonly used throughout the world. Influenza antigen preparation varies between manufacturers.