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The presence of Streptococcus pyrogenus varies depending on the location. In tropical and subtropical countries, the infection is more common, especially during winter and spring. Warmer states like Texas, Arizona, and Oklahoma have a higher infection rate compared to colder states like North and South Dakota, where the microbe doesn't thrive as well. The prevalence of Streptococcus pyrogenus depends on the location. In tropical and subtropical countries, the infection rate is most prevalent. The time of year where the infection is most prevalent is winter and spring season. As you can see on this map, in places like Texas, Arizona, Oklahoma, which are all warmer states, the infection rate is higher than a state such as North or South Dakota, which are colder states, which don't allow the microbe to grow as well.