Airborne pollen grains could transport airborne virus particles such as the airborne coronavirus (CoV) disease (COVID-19). This is stated in a study by scientists from the University of Nicosia (Cyprus), published in the Physics of Fluids scientific journal.
As an example, scientists took 104 pollen grains that fell from a mature willow at a wind speed of 4 km / h.
"Pollen grains can increase the rate of coronavirus (CoV) transmission in a group of people, including some infected. In the case of high concentrations of pollen grains in the air or during spring pollination, a social distance of 2 m is not considered a safety measure for outdoor crowds," the researchers note.
They recommend health authorities revise the social distancing guidelines during flowering trees.
Earlier, ZOE COVID Symptom Study app reported that active sneezing can be the sign of Covid-19 but only if a person was vaccinated.