How can Twitter be used in medical practice? Calling tweeting a "valuable way to reach thousands of people at once," Case Western Reserve University breaks down the various ways on a Web site:
...Other doctors use Twitter to communicate with patients. Generally not to give medical advice, but to guide the public to reputable sources of information, or share breaking medical news. The CDC, for instance, uses Twitter to provide constant updates on H1N1 influenza.
Finally, Twitter offers an invaluable opportunity for doctors to ask questions of other medical providers. Given the real-time nature of Twitter, opinions and answers to clinical issues can be obtained immediately.
In an informal poll on the site, 59% of respondents said Twitter will "soon be an essential tool for medical practices."