I came down mild flu a few days after ours (recovering now). Sore throat, period of semi-wellness then fever, shakes, and night sweats. Admittedly I did have proper flu a decade ago and they had to rush me to hospital and throw me in an ice bath. It was a good job the polar bear had already finished. This one has been distinguished by my having to present my balls to the doctor for a squeeze. Who knew, testicular flu. It's a thing you don't want. More so, I'd imagine, if you're a lady.
The scientist in me says it's a coincidence and not the jab, I've never had a reaction before, and as a semi-regular visitor to sub-Saharan Africa, I've been vaccinated against about everything other than sea lions and crayola.