skynesher/E+/Getty ImagesTexas has issued a health alert this month amid a "significant increase" in whooping cough cases, officials said.The Texas Department of State Health Services (DSHS) confirmed more than 3,500 cases of whooping cough, also known as pertussis, had been reported in October of this year, which is "roughly four times the number reported for the same period last year," per a recent news release, citing provisional data.Whooping cough is easily preventable through a vaccine. "This is the second consecutive year that Texas is experiencing high year-over-year increases in repor...

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