Salisbury Foundation Trust

Salisbury Hospital doctor says COVID-19 enters the lungs via the bloodstream

A theory that gum disease could be the main risk factor for developing severe COVID-19 has been developed by Dr Graham Lloyd-Jones, Consultant Radiologist at Salisbury NHS Foundation Trust, working with international researchers.

The scientific hypothesis highlights the importance of good oral hygiene during illness with COVID-19. It explains that the virus is found in saliva and that the first step the virus takes on its way to the lungs could be through damaged gums. It would then enter the bloodstream and pass into the blood vessels of the neck and chest, through the heart, and to the lung blood vessels.

Dr Lloyd-Jones explains, "The risk factors for severe COVID-19 and gum disease are the same. It could be that gum disease is a converging and principal risk factor for severe COVID-19.” 

The researchers are working to prove the theory but in the meantime say that simple oral healthcare measures should be encouraged in the community, hospitals, and nursing homes. Keeping a healthy mouth may potentially lower the risk of developing severe COVID-19. Using specific over-the-counter mouthwashes which have been shown to kill SARS-CoV-2, could help lower the risk of transmission of the virus from the mouth to the lungs.

28 April 2021

Our staff at Salisbury District Hospital have long been well regarded for the quality of care and treatment they provide for our patients and for their innovation, commitment and professionalism. This has been recognised in a wide range of achievements and it is reflected in our award of NHS Foundation Trust status. This is afforded to hospitals that provide the highest standards of care.

Person Centred & Safe





Salisbury NHS Foundation Trust, Salisbury District Hospital, Odstock Road, Salisbury, Wiltshire, SP2 8BJ
T: 01722 336262 E:
© 2024 Salisbury NHS Foundation Trust
Trust Values