[omrjml]

I am all for vaccines for really dangerous diseases, but we also need to get ill to keep our immune system active and healthy. For example, there are links between being in too clean an environment as a baby and then developing leukaemia. There is similar evidence for other autoimmune diseases.

https://www.sciencedaily.com/releases/2018/05/180521131746.h...

[rorykoehler]

Vaccines work because they keep the immune system active and primed to recognise the disease being vaccinated against.

[omrjml]

Not all vaccines work the same way and it is not obvious what the long term impact of such a "flu pill" would be on our immune system. For example, I would like to know what would be the long term impact on children who do not get exposed to common colds while they are young. Would they go on to develop more autoimmune diseases. They might not, but it is a pretty big unknown.

[jen20]

> we also need to get ill to keep our immune system active and healthy.

This... is exactly what (many) vaccines do.