A 13-year-old girl in Hong Kong, who had received the previous season's flu vaccine but not the current one, died from influenza B, prompting health officials to urge children to get vaccinated against the flu.
A type of flu virus, the Yamagata lineage, has not been seen since March 2020, leading experts to recommend its removal from future flu vaccines. The FDA advisory committee has unanimously agreed to drop the Yamagata viruses from the flu shot formulation for the 2024-2025 season, reducing the vaccine from four to three types of flu. This change aims to boost production capacity and eliminate potential risks associated with growing the virus in a lab. Despite some industry pushback, U.S. flu shot manufacturers are on track to make trivalent vaccines next season, with other countries likely to follow suit.
UPMC medical facilities will require all employees, patients, and visitors to wear masks starting Wednesday due to an increase in RSV cases, as well as influenza A and B. The hospital system will continue to monitor the situation and adjust protocols accordingly.
Influenza A and B are the two main types of flu viruses that circulate each flu season. Influenza A is more common and has the potential to cause pandemics, while influenza B only circulates in humans and has shorter and more predictable flu seasons. Symptoms of the flu include fever, chills, muscle aches, fatigue, and respiratory ailments. Treatment focuses on relieving symptoms and supporting the body's natural defenses, with antiviral medications reserved for those at risk of severe complications. It is important to seek medical attention if symptoms persist or worsen.
Health officials are seeing an uptick in influenza B cases as the flu season winds down. Hospital admissions for flu have been declining since the beginning of the year, but experts warn that a bad flu B peak could bring hospitals back to capacity concerns. Flu vaccines are still effective at preventing hospitalization and death, and it's never too late to get vaccinated, although availability may be an issue as pharmacies and doctors' offices give out their final doses.