LOS ANGELES, Jan.... 16( Xinhua)--The public health department of Los Angeles County, U.S. state of California, is investigating a cluster of gastrointestinal illnesses potentially linked to raw oysters, according to the department. There are 27 associated cases so far, and the L.A. health department is currently working with the California Department of Public Health to investigate and confirm the source of this cluster of gastrointestinal illness cases. The health department warns residents--

Los Angeles County told its residents they must wear masks indoors, even the vaccinated, following a surge in Covid-19 cases and the spread of the highly contagious delta variant.... Before the reopening, cases had declined and the virus outlook seemed optimistic.... Currently, there are 452 people hospitalized with the virus, double the 216 hospitalized one month ago.So far 61% of residents 16 and older are fully vaccinated, according to county data....

The vast majority of new cases are among unvaccinated people. The rapid and sustained increase in cases in Los Angeles County requires restoring an indoor mask mandate, said Dr.... … We need you to get vaccinated.” San Francisco has one of the highest overall vaccination rates in the nation’s most populated state.... At least 83% of residents 12 and older have received at least one dose. Meanwhile, north of San Francisco, at least 59 residents at a homeless shelter have tested positive for the