Before revision:  This result can then be converted to a determination of the infection fatality rate ifr, which appears to be ifr \approx 0.0025-0.005, and even smaller in London, somewhat lower than usually assumed  .
After revision:  This result can then be converted to a determination of the infection fatality rate ifr, which appears to be ifr \approx 0.0025-0.005, and even smaller in London, somewhat lower than usually assumed . Alternatively, the result can also be interpreted as an effectively larger fraction of the population than simple counting would suggest if there is a variation in susceptibility to infection with a variance of up to a value of about 2. The implications are very similar for either interpretation or for a combination of effects .