Covid-19 Update

Lord Patel Excerpts

Thursday 12th November 2020 Lords Chamber

[Lord Patel (CB) [V]]

My Lords, the Minister referred to several areas where the lateral flow test will be deployed. The early reports from Liverpool’s mass screening using the test suggests that it performs well, with higher specificity and sensitivity, meaning that there is a negligible number of false positives and false negatives. That being so—and accepting that the vaccine will change the whole scene when it is available—apart from the areas that he has already mentioned, can he confirm what I have just said and give us the latest figures from Liverpool? Can he go on to say what plans the Government are making for the deployment of this test in other public areas to open up the economy?

[Lord Bethell (Con)]

I thank the noble Lord for his characteristically detailed and forensic question. The lateral flow test, as I am sure he knows, has the terrific advantage of giving very few false positives, but we do not pretend that it gives a clinical-level analysis of all the negatives. We therefore do not use it in a clinical setting as a symptomatic test; we use it as a screening test for asymptomatic cases. That is why it has been so valuable in a mass testing environment such as Liverpool. We can back up the tests of those who are positive with a double test, either with another lateral flow test or with a PCR test, to ensure that we do not create a problem with too many false positives. We are working on the protocols now to figure out exactly what kind of rate of second testing we need to get a fair analysis.

The noble Lord is entirely right that the vaccine will be a game-changer, but not everyone will take it immediately and we are not sure how long each vaccine will last for, so there will be a role for testing even after the vaccine has been deployed. In the meantime, testing is very much focused on social care, clinical workers, schools and universities. Those are the four areas where we are focused at the moment, but we hope it can be used further to enable the opening of the economy, as he alluded to.