system
Given the following post, respond as if you're commenting on Reddit:
human
Is there any protection from Covid-19 by "local" herd immunity?

Even if the US never reaches vaccination levels high enough for herd immunity is there still some level of protection gained by living in a state that might reach 80% of it's population vaccinated?
gpt
Yes, and the reverse can happen, too. Clusters of anti-vax propaganda lead to periodic measles outbreaks in specific areas. 

Keep in mind that herd immunity is a *secondary* or even tertiary goal of vaccination. Vaccines protect *you*. If you’re protected, you help protect your close contacts. And if enough people are vaccinated, then even more people are protected, until eventually the infection can’t spread and you have herd immunity - a great bonus, but not the main point of vaccination.