COVID-19 isn't as concerning to many Americans as it was in 2020. Unsurprisingly, sales of COVID-19 vaccines have plunged. Does that mean investors should throw in the towel on vaccine stocks? Not at all. Vaccine stocks are shares of publicly traded companies involved in the development of vaccines that immunize against many disease-causing microorganisms -- not just the virus that causes COVID-19.
For one thing, COVID-19 vaccines continue to generate significant revenue despite the sales declines. More importantly, there are lots of other types of vaccines that are key growth drivers for some pharmaceutical companies.
Here's what you need to know about investing in the top vaccine stocks, along with our top vaccine stock picks.

What to know about investing in vaccine stocks
Before investing in a vaccine stock, find out about the status of the company's vaccines. Many companies already have vaccines on the market, while others may or may not win regulatory approvals.
Also, learn about any issues the vaccine makers have experienced. Even companies that have obtained the necessary regulatory authorizations can encounter problems that ultimately prevent them from achieving commercial success.
You should also consider a company's other products and pipeline drug candidates. The stocks of drugmakers with other successful products are less risky than those of companies that don't have other products on the market.
Top vaccine stocks
Here are four top vaccine stocks, plus two others to watch:
1. Pfizer

NYSE: PFE
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4. GSK

NYSE: GSK
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Other vaccine stocks to watch
Pfizer, BioNTech, Moderna, and GSK are arguably the top vaccine stocks for investors to consider. However, there are at least two other vaccine stocks to watch.
Bavarian Nordic A/S (OTC:BVNR.Y) markets vaccines for tick-borne encephalitis, smallpox, mpox (also known as monkeypox), rabies, cholera, and typhoid. An mpox outbreak in 2024 put this stock on the map for some investors.

OTC: BVNR.Y
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