Does yoga help to minimize or to cope with the little remained after effects of bact. meningitis? does it helps to improve? do i get better doing it ?

Don't see why not: It likely depends on which after effects you're talking about to begin with. But overall, I see no down sides to engaging in the practice of yoga, post meningitic attack. I wouldn't want to see that it can cure anything when talking about residual effects as this may be too much to say. But at least I don't see down sides. I may advise to avoid doing HOT yoga if you are recently recovering.

Possibly: Weakness or lethargy from bacterial meningitis isnt likely improve directly from Yoga, but such exercises are good for your immune system in teaching control of some parts of your autonomic nervous system for an overall benefit on health and well being. Dont miss any doctors appointments!