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The Philippine government is not taking ‘No’ for an answer.

The health minister is threatening to file a civil lawsuit against Sanofi after the company twice refused to issue a full refund for all dengue vaccine that was used during a recent immunization campaign. The government ended the program last month after learning that Dengvaxia could worsen — rather than prevent — future cases of the mosquito-borne virus in people who had not previously been infected.

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