While most Jamestown Canyon cases are mild, some can be severe.
No outbreak source was ever identified, the authors say.
The absolute rate difference ranged from 1.2 to 2.2 fewer events per 1,000 person-years among all vaccinated adults.
HHS says the last time NWS was detected in animals or livestock in the United States was in the Florida Keys in 2017.
So far, US federal officials have not confirmed any cases in animals this year.
NYC has now reported 4 deaths among 101 Legionnaire's cases, and 15 people are currently hospitalized.
Missouri health officials have announced a lab-confirmed a case of Naegleria fowleri infection, which can destroy brain tissue.
One of the most significant biomedical achievements of the 21st century, mRNA vaccines have reshaped the world’s ability to quickly respond to new viral threats, the group says.
The program, which has battled tickborne disease since 1906, will now round-up stray livestock for preventive screwworm treatment.
Experts say the move risks national security by leaving the US vulnerable to the next pandemic virus.
