"Before the pandemic, research grants to study a loss of smell were hard to come by. It seemed like nobody cared," Danielle Reed, associate director of the Monell Chemical Senses Center, a nonprofit research group in Philadelphia, US, was quoted as saying. But now, "there is an explosive growth of interest among funders", Reed said.
"It was hard to get funding. Big journals or funders didn't think it was interesting enough," another researcher Marco Goeijenbier of Erasmus University in the Netherlands, was quoted as saying.
While conditions such as the inflammation of the heart muscle - myocarditis - affecting 1.5 million people worldwide has been much studied, its connection with fatigue - a prominent COVID symptom - was often unrecognized.
"The fatigue that sometimes follows a bout with COVID-19 might be caused by this heart problem," Bruce McManus, Professor at the University of British Columbia was quoted as saying to the NYT.
Another is lung damage in severely ill COVID patients. The condition can also be the result of viruses, the report stated.