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7. What is the global pattern of chronic infection?

You can divide the world up into places where there are a very high percentage of the populations who are chronically infected with the virus. And this is again World Health and CDC definitions, but if you have more than eight percent of the population who are chronically infected, they are considered a high prevalence area. If it’s two to seven percent, that’s considered an intermediate area and if it’s less than two percent, that’s low.