Raw LLM Responses

Some studies have also shown that a lot of people can have immunity without having detectable levels of antibodies. Serological tests don't tell the full picture. Then there are also studies showing that cross-reactivity from immunity to other coronaviruses is very likely possible. There are also studies suggesting that herd immunity is achieved at percentages much lower than those typically touted, given that social contacts aren't distributed randomly in society. The individuals with a high number of social contacts are more likely to be infected (healthcare workers for instance), and their immunity has more impact than individuals with a low number of social contacts. All this together, herd immunity may be a risky strategy, but it's not possible to claim that herd immunity is not realistically achievable.