Hundreds of thousands of people in China have already received this vaccine. Now, preliminary trials are showing promising results, although it's too early to say whether it can prevent disease.
"With COVID-19 cases increasing around the country, we will have to modify how to observe [Carnival] season," the mayor said. She's asking for alternative ideas from the public.
Health officials are asking more than 300 people who were in attendance to get tested and quarantine after a large wedding earlier this month near Ritzville, Wash.