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Tag: WHO
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New WHO air quality guidelines could save millions of lives
The World Health Organization (WHO) has released new guidelines for air quality in recognition of the damage air pollution inflicts on human health, at even lower concentrations than previously understood. The guidelines set maximum levels for a range of pollutants: particulate matter (as PM2.5 and PM10), ozone, nitrogen dioxide, carbon monoxide and sulfur dioxide. They […]
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New study looks at ideal placement of air purifiers
Researchers from the Department of Engineering, University of Minnesota, have published findings on the efficacy of air purifiers in achieving ventilation rates close to values prescribed by the World Health Organization. The same report claims that purifiers also help to achieve aerosol removal times within the Center of Disease Control and Prevention recommended guidelines. The […]
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Bangladesh blueprint for COVID-19 vaccine delivery
An international team of researchers will assess Bangladesh’s cold-chain framework and create a blueprint for delivering mass vaccination for COVID-19 across the Global South. With a vaccination framework supported by Gavi, the Vaccine Alliance and the World Health Organisation (WHO), Bangladesh has one of the world’s largest pharmaceutical and vaccine industries. However, like many countries, […]
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COVID-19 forcing a rethink on ventilation
Over the past few weeks, as the world registers more outbreaks of COVID-19, the attention on aerosol transmission of the virus has intensified. Researchers at the University of Florida have now made an important breakthrough. The team isolated viable virus from aerosols collected in a hospital room dedicated to two patients with COVID-19. The air […]
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‘Watching brief’ on airborne COVID-19
The World Health Organization (WHO) has acknowledged growing concerns surrounding the airborne transmission of the coronavirus, following the publication of an open letter addressed to the Geneva-based agency, but says more evidence is still required. Since the beginning of the pandemic, the organisation has advised that the virus is primarily spread through large respiratory droplets […]
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Experts call for indoor humidity guidelines
Leading members of the international scientific and medical community have called on the World Health Organization (WHO) to establish global guidance on the minimum lower limit of air humidity in public buildings. Those behind the move have created a petition, which they say is aimed at increasing global public awareness about the crucial role indoor […]
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Speculation rife on airborne COVID-19
New studies have fuelled speculation about COVID-19 spreading through the air, and emphasised the vital role that HVAC systems will play in controlling the virus. Since the beginning of the outbreak, the World Health Organization has advised that SARS-CoV-2, the virus that causes COVID-19, is mainly transmitted through contact with respiratory droplets. When someone with […]
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Coronavirus and HVAC
Since the first case was detected in China in December 2019, the novel (new) coronavirus (2019-nCoV) has spread rapidly. On January 31, the World Health Organization (WHO) declared the novel coronavirus a public health emergency. Although the vast majority of coronavirus patients have been in China, cases have been confirmed in Australia. Not surprisingly, local […]