Dr Taweesin Visanuyothin, spokesman for the Centre for Covid-19 Situation Administration (CCSA), said on Friday (April 24) that the number of patients under investigation (PUI) has risen significantly since April 7 due to a change in criteria.
According to the Public Health Ministry, there have been 47,786 PUI since March 1, with 2,839 persons or 5.94 percent testing positive before April 7. However, as soon as the criteria was changed, the numbers increased significantly, with up to 19,010 people being listed as PUI and 619 or 3.26 percent confirmed to be positive.
Also, laboratories can now conduct more polymerase chain reaction (PCR) tests, which can lead to more cases being identified. Taweesin said labs in Bangkok should be able to conduct 10,000 tests per day or around 835 tests per area on average.
However, in reality, only 2,000 tests are carried out across the nation due to a lack of testing materials.
Meanwhile, the Ministry of Public Health has verified 123 labs for Covid-19 tests and aims to open more state and private labs nationwide.