system
Given the following post, respond as if you're commenting on Reddit:
human
[X-Men] Is Jean Grey a powerful enough telekinetic that she is effectively immune to disease?

Does Jean have a fine enough control of her powers to say, isolate all foreign pathogens inside her own body, and then pull them out?  

I've seen her disassemble things into their constituent molecules before.
gpt
At high end of her power you're correct, she should be able to telekinetically purge herself from most harmful substances, including bacteria. 

However it's unlikely that without various Phoenix-related super-sayan modes she can do it at-will and fast.