Just curious...

I guess that with Penny was an one time thing. He had to drive her because there was noone else around and she was in a lot of pain. He was forced to play the hero and to help the "damsel in distress". Now in this case, his presense there isn't obligatory. Howard's mom is already in the hospital and noone needs him to do anything but to be supportive and that's not exactly his thing as we saw in the ADD("there, there, Sheldon's here!":D).

Now as for the germs, I'm actually not sure myself what's going on..There are times that he doesn't seem to be afraid of them and others that he does..:/

As much as I 愛 The Big Bang Theory the 書く from time to time is abit inconsistent to say the least. I mean we've seen him in hospitals before like when Leonard was dating Dr. Stephanie, he went there twice once with Leonard and once によって himself.

Maybe he's gotten もっと見る germaphobic? I dunno lol. Only thing I could think of to explain it.

I think it's because Penny was injured. That's not contagious. An illness is. *shrug*