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Use "serotypes" in a sentence
"Pneumococcal conjugate vaccines are designed to prevent disease due to the most important strains (called serotypes) circulating in an area, but they don't prevent all of them."
"But this species includes more than 2,300 different strains, technically known as serotypes or serovars."
"Botulinum toxin occurs in seven different forms, known as serotypes A through G, although serotypes A and B are the culprits in about 90 percent of the foodborne botulism cases in the United States."