is vaccine stock a buy?

as the coronavirus continues to spread across the world and there are more emerging variants, pharma companies such as Pfizer and moderna will most likely to receive funding from governments and institutions to develop newer vaccines to counter against these new variants, so these stocks might continue to be bullish in the short to mid term, at least for the next two years. the decline for such stocks might come once governments start to accept covid-19 as an endemic and treat it as another type of flu.