Thrush is a type of fungal infection. It occurs in your mouth and throat. Thrush does not usually affect healthy adults. It is more common in people with impaired immune systems. It is also more likely in those who take certain kinds of medicines.
2019 Novel Coronavirus (2019-nCoV), also known as COVID-19, is a virus that causes a respiratory illness. Coronaviruses are a very common cause of bronchitis. They may sometimes cause lung infection (pneumonia).