The current total number of cases is 59,059. Community case detected before flying to Vietnam The single community case is a 57-year-old female Singaporean who is a homemaker. She is an asymptomatic case, and went for a Covid-19 test on Jan. 13 in preparation for a trip to Vietnam. Her polymerase chain reaction (PCR) test yielded a high Ct value, which is indicative of a low viral load. Her serological test result has also come back positive, which indicates a likely past infection. Her close contacts and family have been placed on quarantine and epidemiological investigations are ongoing. Locations visited Here are the locations visited by the community case while she was infectious, a 14-day incubation period.