Health & Medicine
- 			 Health & Medicine Health & MedicineCOVID-19 may be most contagious one to two days before symptoms appearThe coronavirus probably spreads the most before symptoms appear, making containing viral transmission harder. 
- 			 Health & Medicine Health & MedicineWhy African-Americans may be especially vulnerable to COVID-19African-Americans are more likely to die from COVID-19 than white Americans, data show. Experts blame long-standing health disparities. By Sujata Gupta
- 			 Health & Medicine Health & MedicineMeet Sophia Upshaw, a volunteer in a coronavirus vaccine trialIn Seattle and Atlanta, scientists have started testing the safety of a potential vaccine to prevent COVID-19. 
- 			 Health & Medicine Health & MedicineCan fabric masks stem the coronavirus’ spread?It’s unclear whether homemade masks made from fabric will prevent an infected person from spreading the virus to others, experts say. 
- 			 Health & Medicine Health & MedicineWarm weather probably won’t slow COVID-19 transmission muchWhile some evidence has suggested higher temperatures can affect coronavirus transmission, summer’s arrival probably won’t curb the pandemic much. 
- 			 Health & Medicine Health & MedicineCan plasma from recovered COVID-19 patients treat the sick?Researchers are racing to set up clinical trials of antibody-rich convalescent plasma from recovered patients to treat or prevent COVID-19. 
- 			 Health & Medicine Health & MedicineJust breathing or talking may be enough to spread COVID-19 after allUntil now, experts have said that the virus spreads only through large droplets released when people cough or sneeze, but it may spread more easily. 
- 			 Math MathHow large a gathering is too large during the coronavirus pandemic?Mathematical models explain why large gatherings are especially dangerous in an epidemic, and identify how large is too large. 
- 			 Health & Medicine Health & MedicineHow coronavirus control measures could affect its global death tollSlowing the virus’ spread will save millions of lives, but differences among countries could vary the pandemic’s toll in different places. 
- 			 Animals AnimalsA cat appears to have caught the coronavirus, but it’s complicatedWhile a cat in Belgium seems to be the first feline infected with SARS-CoV-2, it’s still unclear how susceptible pets are to the disease. 
- 			 Health & Medicine Health & MedicineSocial distancing comes with psychological falloutKeeping people apart can help slow the new coronavirus’ spread. But such social distancing may cause or worsen mental health problems. By Sujata Gupta
- 			 Health & Medicine Health & MedicineHow antibody tests work and could help fight the coronavirusCoronavirus antibody tests look for signs in the blood that someone has had an infection and recovered, and could take only a finger prick. By Dawn Fallik