by Michael Riediker | Jun 22, 2020
Michael Riediker1*, Lidia Morawska2 1Swiss Centre for Occupational and Environmental Health (SCOEH), Winterthur, Switzerland and 2International Laboratory for Air Quality and Health (ILAQH), Queensland University of Technology, Brisbane, Queensland 4001, Australia...
by Michael Riediker | May 11, 2020
When people breathe, speak or sing, they always emit small quantities of tiny lung lining fluid droplets, small enough to stay airborne for many hours. Should I worry about these aerosols? Not much if you cross others briefly on the street. Yes, if you spend a long...
by Michael Riediker | Apr 22, 2020
Worldwide, countries closed their schools because of COVID-19. But in Switzerland, in three weeks from now, schools are supposed to reopen. Can this be done safely? Probably yes, but only with great prudence! It is not enough to hope that the kids will be fine....
by Michael Riediker | Apr 11, 2020
Imagine you are driving and hear on the radio: „Attention, in Canton Zurich, there is a wrong-way driver on the highway – to respect the driver’s privacy, we cannot disclose the location“. This would be crazy, right? In public health, location data can be...
by Michael Riediker | Apr 6, 2020
Today, many news outlets reported that one of the Bronx zoo tigers was tested positive for COVID-19. The tigress Nadia developed a severe dry cough, reason why she got tested. It turned out that also the other three tigers along with three lions developed the same...
by Michael Riediker | Apr 1, 2020
True or false? „Washing hands is useless because people don’t do it right and because they touch their face too often!“ FALSE! But why do we hear the same arguments about wearing hygiene mask (surgical masks) to prevent the spread of the respiratory disease COVID-19?...
