Due to the devastating worldwide impact of COVID-19, the illness caused by the SARS-CoV-2 virus, there has been unprecedented efforts by clinicians and researchers from around the world to quickly develop safe and effective treatments and vaccines. Given that COVID-19 is a complex new disease with no existing vaccine or specific treatment, much effort is being made to investigate the repurposing of approved and available drugs, as well as those under development.

Glucocorticoids are widely used in treating acute respiratory distress syndrome (ARDS) despite there being no indisputable scientific evidence of their effectiveness. The main reason seems to be that there is no effective treatment for ARDS patients on ventilators. The death rate of these patients differs between 30-40 percent depending on the data.

In a perspective piece published in the journal Science, UC San Diego experts describe in detail the growing evidence that SARS-CoV-2, the novel coronavirus that causes COVID-19, can be spread by asymptomatic people via aerosols - a reality that deeply underscores the ongoing importance of regular widespread testing, wearing masks and physical distancing to reduce the spread of the virus.

The investigational antiviral remdesivir is superior to the standard of care for the treatment of COVID-19, according to a report published today in The New England Journal of Medicine. The preliminary analysis is based on data from the Adaptive COVID-19 Treatment Trial (ACTT), sponsored by the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health.

For some COVID-19 patients, the body's immune response may be as destructive as the virus that causes the disease. The persistent high fevers, severe respiratory distress, and lung damage seen in some critically ill patients are all signs of an immune system in overdrive.

According to a study by Charité - Universitätsmedizin Berlin, the northern Italian city of Nembro recorded more deaths during March 2020 than between January and December 2019. However, only approximately half of all deaths recorded this spring were classified as confirmed COVID-19 deaths. The study shows that the health impacts of the COVID-19 pandemic may go far beyond official COVID-19 death counts.

Local variations in climate are not likely to dominate the first wave of the COVID-19 pandemic, according to a Princeton University study published May 18 in the journal Science.

The researchers found that the vast number of people still vulnerable to the strain of coronavirus causing the pandemic - SARS-CoV-2 - and the speed at which the pathogen spreads means that climate conditions are only likely to make a dent in the current rate of infection.