KUALA LUMPUR: Covid-19 environmental surveillance using sewage water conducted from June to Dec 31, 2022, showed that 96.5%, or 28 out of 29 samples taken from international entry points contained the presence of the Omicron variant of the SARS-CoV-2 virus, says Tan Sri Dr Noor Hisham Abdullah.
The Health director-general said the results came from testing at the National Public Health Laboratory while one more sample was still being tested.
