County of Los Angeles Department of Public Health has identified a third case of coronavirus in the city of Claremont.

No information about age or gender of Claremont’s confirmed cases has been released by the county.

Across all of Los Angeles County, health officials have found 4,045 cases, including 78 deaths, according to the organization’s website on Thursday. From Tuesday to Thursday, there were 1,047 new cases in Los Angeles County.

Emerging evidence suggests that there may be a significant number of people infected with COVID-19 who are asymptomatic and capable of spreading the virus to others.

Age groups of Los Angeles County coronavirus cases, excluding Long Beach and Pasadena are 36 people age 17 years and under; 1,385 from age 18 to 40; 1,630 from age 41 to 65 and 787 people over the age of 65; and 31 additional cases for people of unknown ages.

To date, of the 4,045 cases in the county, 879 people have required hospitalization.

New guidance from the Centers for Disease Control and Prevention (CDC) suggests that everyone needs to think about using universal precautions all of the time—assuming that each of us can infect others even if we are not sick ourselves.