transmission

California could see an early start to the annual flu season, as a combination of low vaccination rates and late mutations to the virus may leave the state particularly exposed to transmission, health experts say.

He compared the circumstances with those after a natural disaster, such as a hurricane that damages power lines or a major wildfire that destroys key transmission lines.

The risk to humans is low and transmission from birds to humans is rare.

According to study co-author Dr. Sunny Li, a professor in the School of Engineering, the standard method for reducing infectious disease transmission involves upgrading a building's ventilation system to manage airflow throughout large areas.

They say there is no evidence of transmission of the virus between people, but they are monitoring anyone who was in close contact with the patient.