There are two major factors: how long you have been exposed and the amount of virus present in the air. The restaurant has no windows or ventilation system, but has two ceiling air conditioners that circulated air in the direction of the two diners. Those infected directly faced the air flow circulated from the table of the asymptomatic patron. Actually, LGUs should probably not wait for DOH to wake up and on their own should promulgate needed new rules and guidelines to address the real danger of COVID air transmission. The public health community should act accordingly and without further delay.”The virus is in the air.

Source: Philippine Star April 29, 2021 16:04 UTC