
ALT The study includes comparisons of pre v post pandemic onset, as well as pandemic-era C19+ v C19- children. Estimates are larger for the 1st comparison (12.1 v 6.4 kids per 100 person years) than 2nd (14.0 v 8.6), likely because of under-diagnosis of C19, i.e., the "controls" in the pandemic era often also had undiagnosed Covid. No way of knowing the impact of repeat infections, e.g., whether the risk is mainly on the 1st infection, 2nd, 3rd, etc., increases cumulatively, or what.

ALT How Does Risk Increase with More Social Contacts? Number of People | Chances Anyone is Infectious 1 1.5% 2 3.0% 3 4.5% 4 5.9% 5 7.3% 6 8.7% 7 10.1% 8 11.4% 9 12.8% 10 14.1% 15 20.4% 20 26.2% 25 31.6% 30 36.6% 35 41.2% 40 45.5% 50 53.2% 75 68.0% 100 78.1% 150 89.7% 200 95.2% 300 98.9% 400 99.8% 500 >99.9%




















