A vaccine may one day be able to replace oral blood thinners to reduce the risk of secondary strokes. Japanese researchers successfully tested an experimental vaccine in mice and found that it provided protection against blood clots for more than two months without increasing the risk of bleeding.

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A vaccine may one day be able to replace oral blood thinners to reduce the risk of secondary strokes. Japanese researchers successfully tested an experimental vaccine in mice and found that it provided protection against blood clots for more than two months without increasing the risk of bleeding.