Single point of data: All the years I lived in cities and did what an average urban dweller does: packed in an office, packed in public transportation or even

Single point of data: All the years I lived in cities and did what an average urban dweller does: packed in an office, packed in public transportation or even packed on the pavement, packed in shops, packed in bars, packed in elevators, packed on the terraces or in a concert hall; I was getting a flu (or something very similar putting me in bed for 3 days) at least twice a year, sometimes thrice. In the last 7 years, I have been living in the country and not taking part in almost any social activity. I got my first major flu on January this year. First time in seven years for something that previously happened to me every year. Brought by family members who had gone to some gathering... in the city (and who had been vaccinated against flu as obedient citizens, but that vaccine is notoriously crappy). We all got sick. In all those years, I only got 2 or 3 minor episodes, and all of them immediately followed one my very rare and short stays in the city, or a close family member who brought me that 'gift' from the same place.