More than 130 stranded by false Covid test results at Hong Kong mega bridge

Only three infections confirmed upon verification, after on-site service provider Sunrise Diagnostic submits ‘abnormal’ 136 positive results.

More than 130 travellers were stranded at the Hong Kong-Zhuhai-Macau Bridge overnight on Tuesday after on-site nucleic acid tests falsely showed them to be Covid positive.

Hong Kong’s Centre for Health Protection (CHP) said the service provider running PCR tests at the bridge for outbound travellers submitted 136 positive or indeterminate samples on Tuesday, “which far exceeded that of previous days”. However, only three of the cases were confirmed as positive upon verification, with nine samples still judged to be indeterminate. The rest were all negative.

Chuang Shuk-kwan, head of the CHP’s communicable disease branch, said environmental contamination was the likely cause of the faulty test results.