You don't think they would have noticed that 1 in 50 people who got the flu had died, 10 in 50 ended up in hospital on oxygen with it and worse?
You'd just have a load of mnetters coming on to say, "I wonder if anyone has got this virus that's gone through the house and DH is on oxygen and my mum's dead, does anyone have anything similar?" And everyone comes on and goes "yeah, it's going around"
Meanwhile there's a fucking enormous queue coming out of a&e...yeah, nothing to see here, no-one would notice