Pfizer is expected to generate $ 15 billion, or about a quarter of its total revenue this year, from sales of the corona virus vaccine it developed with its German partner Biontech. The company indicated that its sales could exceed $ 15 billion if more supply contracts are signed. Pfizer said it intends to produce two billion doses of Covid-19 vaccine in 2021 and expects to provide the US government with 200 million doses by the end of May. The company expects 2021 sales to range from $ 59.4 billion to $ 61.4 billion. Source: Reuters