Eh, I wouldn’t be. The only groups that have both the knowledge and the resources to carry out large scale bioterrorism are state actors. The soviets and Brits had a couple of oopsies during the Cold war and killed a few of their own. Other than that, imperial Japan is the most recent group to launch major bio attacks against their enemies, and that was 80 years ago.

Bioterrorism just isn’t that appealing to most countries that have the capability because it has a ton of collateral damage and (rightfully) makes you look like a supervillain, which will likely make even the strongest allies reconsider support.

Don’t worry about bioterrorism, your chances of experiencing it are pretty much zero.