Question to the Department of Health and Social Care:

To ask the Secretary of State for Health and Social Care, what estimate he has made of the proportion of transmissions of covid-19 which took place during (a) international and (b) national flights.

It is not possible to systematically identify where infection occurs in individual positive cases of COVID-19. Where someone who has tested positive for COVID-19 has recently travelled on a flight, contact tracing will be carried out by a public health specialist. Priority is given to contact-tracing close contacts and co-travellers, since these persons face a higher risk than other passengers. This is the case for both international and national flights.