BCG vaccine and COVID 19

[Randomnessembraced]

www.medrxiv.org/content/10.1101/2020.03.24.20042937v1

I have been reading in a few places that the BCG vaccine which my husband and I had as children in our home countries "may" offer our immune systems some help in fighting Covid 19, if we were to catch it. It is no certainty, clinical trials are being undertaken. In the UK, I think mass BCG vaccination was phased out in 2005. www.healthcentre.org.uk/vaccine/who-gets-the-bcg-vaccine-in-the-uk.html We live in Outer London and my kids were still offered BCG as babies, but I remember with my youngest there was a shortage and she had it slightly older. So is there a BCG immunisation gap in kids born since 2005? I know at this point there is no 100 % hard evidence that BCG does indeed help against Covid 19, but if it does, it is a bit concerning if some of our kids are not vaccinated, but most Chinese kids are?

All 3 of my DC have had the BCG post-2009 (inner London Borough).

I didn't have it (mid-80s rural county) so it was being phased out way before 2005.

Here's a critique of the study
naturemicrobiologycommunity.nature.com/users/36050-emily-maclean/posts/64892-universal-bcg-vaccination-and-protection-against-covid-19-critique-of-an-ecological-study

Thank you HoldMyLobster - that critique is helpful, highlighting that this is a hypothesis to be tested further and no more than that at this point. Are there any studies on CV 19 asymptomatic patients yet and observations on their immune responses?