Relativa fuktighetens påverkan på överlevnaden av virus i inomhusluft

Sammanfattning: Poor indoor air quality not only affects the comfort and health of us humans, but it can also contribute to the spread of bacteria and viruses if the conditions in the air are favourable for the virus. Several studies have been done where different virus survivability has been examined under different temperatures and relative humidity. Studies have shown that the relative humidity affects the viability of the virus, but the degree to which it affects is depending on the virus that is being studied. The purpose of this study is to examine the relationship between relative humidity in the air and the survival of SARS-CoV-2 in aerosols. Then do a study to examine the risk of infection at different levels of the relative humidity. First a study will be examining the effect of relative humidity have on the survival of SARS-CoV-2 in aerosols, then the collected data will be used to examine the effect that relative humidity has on the airborne transmission of the virus, using Wells-Riley's model. The results of the literature study showed that the relative humidity affects the survival of the SARS-CoV-2 virus in aerosols. In compiling the results, it could be seen that higher relative humidity led to a lower half-life of the virus in aerosols. The results showed that in the two cases studied, the risk of becoming infected through airborne transmission of SARS-CoV-2 could be lowered by 18% by increasing the relative humidity from 30% to 40%.