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In hopeful sign for the US, flu vaccine shows strong protection against hospitalization in South America, CDC report shows
Early data from South America shows that the flu vaccine has cut the risk of hospitalization in half this year, a hopeful sign that the vaccine will provide a similar level of protection in the United States as the country heads into its own respiratory virus season.
Early data from South America shows that the flu vaccine has cut the risk of hospitalization in half this year, a hopeful sign that the vaccine will provide a similar level of protection in the United States as the country heads into its own respiratory virus season. Read More Breaking News, Latest News and Videos | CNN