Monkeypox vaccine: What you should know about possible side effects and ‘the lump’

One common side effect complaint about the Jynneos vaccine is a red bump at the injection site lasting for two to three weeks, if not longer. But experts reassure that it’s not a “weird” or “permanent” reaction. (AP)

If you’ve gotten vaccinated for monkeypox, you may be familiar with “the lump.” 

Since the viral outbreak reached the United States this summer, many people have taken to social media to report side effects of the Jynneos vaccine, which can be injected intradermally (into the skin) or through the more traditional subcutaneous method (below the skin).