The virus that causes COVID-19 can be found in semen, Chinese researchers report in a small study that doesn’t address whether sexual transmission is possible.
Doctors detected the virus in semen from six of 38 men hospitalised with laboratory-confirmed COVID-19. Four were still very sick with the disease while two were recovering.
There was no long-term follow-up so it is not known how long the virus may remain in semen or if men can spread it to their partners during sex.
The results contrast with a study of 34 Chinese men with COVID-19 published last month in the journal Fertility and Sterility. U.S. and Chinese researchers found no evidence of virus in semen tested between eight days and almost three months after diagnosis.
Authorities believe the coronavirus mainly spreads from droplets produced when infected people cough, which are inhaled by people nearby.
Some studies have reported finding the virus in blood, feces and tears or other fluid from COVID-19 patients with inflammation in their eyes.
Evidence suggesting that other infectious viruses including Zika and Ebola may be sexually transmitted has prompted questions about the coronavirus.
The new study shouldn’t be cause for alarm. To be safe, though, it may be wise to avoid sexual contact with people until they are 14 days without symptoms.