Prat Boonyavongvirot, Permanent Secretary for Public Health said that the number of new infections is probable to rise every day and the new flu spreading level is likely soon to reach the C level, which indicates the new cases will be detected across the country.

He said thermal scanners at airports are unsuccessful in preventing the spread of the virus as there are at least 30,000 air passengers arriving in Thailand from affected countries daily.

The public health ministry will urge Thais to wear face masks as the next step in prevent the spread of the virus more effectively.