We could try to make the comparison you are suggesting instead. But to make a valid comparison we need to consider:
Is influenza infectious for 10 days before any symptoms show?
How many people get the influenza vaccine each year? I.e. is there some herd immunity built up?
The symptoms of influenza are universally nasty for everyone infected. No one with the flu is walking around and going to work (if you think do then you don't have the influenza virus you have a cold). It seems that at least some people with this new corona virus just have cold like symptoms and therefore will not by default be self-isolating like people with influenza naturally do.
Peak cold symptoms last about 3 days. I never said 50% of the population have the same cold at once. 50% catching it over a 6 month period is very reasonable.
Telemetry is 100% not a viable fit for an open source project. A very significant proportion of your potential users will either keep it disabled or if that is not possible (which would be illegal in the EU anyway) not use your software.
> Also about telemetry if all power users turn it off then you can have situations where developers will drop a feature because they don't use it and there is no data to show that more then 12 people are using it.
Yet another reason not to put telemetry in your software.
That number won't change. The main cause of miscarriage is that the embryo/foetus has a massive problem and can't ever develop. There is nothing medical science can do. In fact many more miscarriages are known about today - 50 years ago most women wouldn't even have known they were pregnant they would have thought they had a late heavy period.
Not as big as you are thinking the MMR is normally given after one year. This is because there are some know potential negative side effects when babies get it earlier.
The point is that society already evaluates these hazards/risks very effectively so that individual parents don't need to. Indeed any individual parent's risk analysis about vaccines is likely to put their children at greater risk.
The GDPR pop up is NOT just a pop up (not if you are following the law). If you are a data controller and you believe that the GDPR is just a pointless pop up you should consult your lawyer and see what they say.
Colds are quite different to flues.