A high prevalence of particles makes patients more infectious, but it is unclear if it leads to a more severe infection.
Dr Sara Kayat
Dr Sara Kayat is a practising NHS and private GP in the UK, and This Morning's resident GP on ITV.
One of the symptoms of coronavirus is a high fever – but why do we get them and can they be dangerous?
A doctor explains why smokers are more likely to contract respiratory illnesses.
A doctor explains why there are conflicting opinions about the use of face masks to prevent the spread of COVID-19.
Heart disease puts people at higher risk of complications from COVID-19, but the virus can also trigger heart problems.
New research suggests the coronavirus may be able to lie dormant and later ‘reawaken’. A doctor examines the evidence.
A doctor explains the four pillars of health and how you can adhere to them during the coronavirus pandemic.
A doctor explains some of the reasons why men appear to be more likely to die when they catch COVID-19.
Scientists say it will take 12 to 18 months before a coronavirus vaccine can be ready. A doctor explains why this is.
Those with asthma are considered ‘at risk’ of developing complications. A doctor explains the steps they should take.