A hepatitis A outbreak was declared in Los Angeles County on Tuesday, according to the Los Angeles Times, just days after San Diego health officials announced an outbreak of the contagious disease in that city. While only 10 people have been confirmed infected in Los Angeles County, the San Diego outbreak is currently much larger: More than 400 people have been sickened there, and at least 16 have died. Most of those infected in San Diego have been homeless, according to a statement from the county, and health officials say the virus has spread through contact with a “fecally contaminated environment.” In Los Angeles County, officials said they’d documented five people with the illness who had recently traveled to San Diego or Santa Cruz (where cases related to the San Diego outbreak also appeared) .