For the second time in as many weeks, a foreign government reported that one of their citizens were infected with the coronavirus when they returned home from Thailand, which claims to have had no local cases in 12 weeks.
Director-General of Disease Control Department Dr. Suwannachai Wattanayingcharoenchai confirmed Monday that the Health Ministry is interviewing management and neighbors at a Bangkok condominium where a 46-year-old Malaysian man stayed before returning to Kuala Lumpur Aug. 5.
He tested negative for Covid-19 upon his return, but tested positive on the last day of his mandatory quarantine stint in the Malaysian capital Aug. 15.
Suwannachai said his Malaysian counterpart has not confirmed where or when he contracted the virus, but said it was unlikely he got it in Thailand.
“The investigation will seek the source of his infection, which is still a mystery since he was quarantined in Malaysia for 10 days,” he said.
The Disease Control Department has launched contact tracing at the Bangkok condo and is preparing to test residents there if necessary.
The latest mystery comes less than a week after the Health Ministry acknowledged that a 24-year-old Thai construction worker and a 47-year-old Japanese national both positive after returning to Japan from Thailand.
While the Japanese national tested negative on a subsequent exam, more-thorough test, no further information has been disclosed about the Thai man.
Also never clarified was the cases of several Burmese migrant workers who tested positive in Myanmar state quarantine after being deported from Thailand in June.