Fox-news/science/wild-nature/viruses

• Flu hospitalizations hit all-time weekly high in densely populated state, officials warn - New York reports record flu hospitalizations and cases, with a rise of nearly 1,000 in a single week. Health experts urge immediate vaccination as a new variant spreads.
• Flu by state: Where this season’s highly contagious variant is spreading the most - A highly contagious flu mutation called subclade K is sweeping the nation, raising health concerns about vaccine effectiveness this season. Here are the states at most risk.
• CDC warns Americans traveling to 4 countries over outbreak of untreatable mosquito disease - Global chikungunya outbreak prompts health warnings as cases surge across tropical regions. WHO reports 155 deaths from mosquito-transmitted virus.