有些病菌非常顽强也很毒，如果不小心感染了那些病菌，就可能会得重病，严重

有些病菌非常顽强也很毒，如果不小心感染了那些病菌，就可能会得重病，严重的甚至会病死。

Results (English) 1:

Some bacteria are very tenacious and very toxic if accidentally infected with those bacteria, it may be very sick, serious or even died.

Results (English) 2:

Some germs are very tenacious and poisonous, if accidentally infected with those bacteria, they may become seriously ill, serious or even dead.

Results (English) 3:

Some germs are very stubborn and poisonous. If you accidentally infect those germs, you may get seriously ill, even die of illness.