Oh no, may all those who live in areas with spikes stay safe and keep having negative tests!
(And on a more hopeful note, may all of your hairdressers make the miracles you hope for happen!)
Does anybody know if it's possible to make a vaccine that gives you a much better immunity than actually having the disease?
Hm. I remember back when I was in primary school, my entire family had scarlet fever several times during the same winter since you only get short-lived immunity from it, and we kept reinfecting each other. That was kind of a problem since each time me and my siblings had it we had to stay home from school/kindergarten for two weeks, and effectively stayed at home for over a month in that year. So to make that cycle stop we all had to take a medication that kept up the immunity long enough to not get it again as long as someone in our family still had it. That did work, so I guess it is possible to find a vaccine that makes immunity longer. Hopefully it is.
Then again, in the next winter, the entire thing happened all over again. It also ended with us having to take the lengthening-of-immunity-medication. But that was it, after that year we never got it again.