Merck mystified by sudden 'step down' in Gardasil sales in China

Merck mystified by sudden 'step down' in Gardasil sales in China

Source: 
Fierce Pharma
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On a day when Merck reported strong sales for its launch of pulmonary arterial hypertension (PAH) treatment Winrevair (sotatercept) and stalwart cancer medicine Keytruda, the positive news was overshadowed by the suddenly flat sales of Gardasil.