Tree pollen may spread coronavirus

During the pandemic, pollen may be nothing to sneeze at.
Scientists from the American Institute of Physics in Maryland noticed a correlation between coronavirus infection rates and pollen concentrations.
Pollen grains can carry hundreds of viral particles at a time, with trees alone releasing up to 1,500 grains per cubic meter during peak hay fever season.
To learn more, the scientists used a computer model to mimic how pollen moves from a willow tree.
Results – published in the journal Physics of Fluids – suggest airborne grains may contribute to the spread of the coronavirus, particularly in a crowded place.
In the UK, willow's pollen season generally lasts from early March to mid May. Oak, pine and lime trees continue to release the allergen throughout June and July, however.