Personal hygiene precautions are vital. Outdoor air intake can reduce virus infection rates in buildings but need hospital-grade filtration to remove harmful particles.July 31, 2020
HK on Sunday recorded its second-worst level of air pollution at ‘Very High’. The EPD cited a surge of ozone likely to linger till strong winds blow it away. Air Pollution causes premature deaths of thousands annually in the city. Ozone is toxic and reduces human immunity to respiratory diseases. Fortunately, annual air pollution death statistics are declining. Greater regional coordination and switch to electric vehicles are seen as effective measures.May 29, 2020
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