Why Are Some People So Much More Infectious Than Others?

As the coronavirus tears through the country, scientists are asking: Are some people more infectious than others? Are there superspreaders, people who seem to just spew out virus, making them especially likely to infect others?It seems that the answer is yes. There do seem to be superspreaders, a loosely defined term for people who infect a disproportionate number of others, whether as a consequence of genetics, social habits or simply being in the wrong place at the wrong time.But those virus c