Before I get to the main topic for this post, I just want to note that here is a perfect example of panic porn using misleading information. (WHO Piece) WHO, which has amply disgraced itself, claims that there have been more CV-19 cases in the last two weeks than in the first six months of the epidemic. Among other things, even if true, which is dubious, it ignores the great disparity in testing rates in the two time periods. But what it really ignores, again, is the importance of looking at these statistics on a per capita basis, country by country. India is a huge country and has a lot of cases. It is not having nearly as bad a wave as the US had in late fall/early winter.
As readers know, the effect of the terror campaign and school closings on children is the one thing that fires me up the most about the epidemic response. Here are three studies again showing that children were both less likely to be infected and have serious disease and were less likely to transmit CV-19. I don’t care what excuses are used, teachers should have been doing full, in-person education and children should have been allowed to live as close to a normal life as possible. What we have done has scarred a whole generation for life. The first study dealt with household transmission and found that child index cases had far lower rates of secondary transmission than did adult ones and that adults were far more likely to transmit to children than vice versa. Another interesting finding was that in over half of households there was no secondary transmission. You just wonder what could account for that other than some immune response. (JID Article)
Next up, a study among children in Hong Kong. (JAMA Article) The researchers found that CV-19 was very unlikely to spread among children in schools, and that households were by far the main source of transmission to children, almost always from adults in the household. About 40% of all cases were asymptomatic and 99% of illnesses were mild.
Finally, this study from Israel has similar findings. (PLOS Study) 637 households were included in the study and all members of the household were tested by PCR and some for antibodies. Children were about 40% less likely than adults to be infected and were 60% less likely to infect someone else.
And here is a quick letter finding more evidence that people who have been infected are extremely unlikely to become reinfected. This study was done among health care workers and in comprehensive testing of an asymptomatic group found no reinfections. (JID Letter)