The funny part is that this monkey pox strain has been around since 2003 with little effect. What has changed? 60% of the plannet has compromised immune systems due to the covid vaccine. (By the way, the monkey pox vacine is an updated small pox vacine. If you have had the small pox vacine, you are good to go. Unless the covid vacine ruined that for you, that is.)
The smallpox vaccine has a limited time of effectiveness the US military maintains a 3 year booster schedule as does USAMRIID and the CDC for anyone who works with or around smallpox or has been potentially or will potentially be exposed. Feel free to look up the booster schedule its public available data. This is paralleled by the WHO and EU health agencies where smallpox was endemic.
Good news is further study has found that a good majority of people who either survived actual smallpox or got the live virus vaccine carry antibodies for a very long time. That means anyone older than 50 or a Gulf war vet is likely immune to monkey pox even today.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2610468/