As the likelihood of President Barack Obama's style of health care/health insurance reform has looked more and more uncertain, health care sector stocks have rallied, nearly 10 percent over the last month.

But now as Obama is showing some signs of managing his message and could be trying to make a comeback, even as polls show the odds aren't his favor, CNBC market analyst Steve Grasso is cautioning viewers to be wary of health care stocks for the time being.

"You know, one of my picks has been health care," Grasso said. "I'm a little shaky on it the longer this process goes on, I think the more we have to look at it. I mean, I caught a glimpse of President Obama speaking today. If they're clapping, that was a hand-picked audience. I have yet to find anyone who likes the plan. So I think health care is on waivers for me at this point."