Ok, so may be we don't have a non-fatal strain of the hantavirus... In today's New York Times:

If that headache plaguing you this morning led you first to a Web search and then to the conclusion that you must have a brain tumor, you may instead be suffering from cyberchondria.

On Monday, Microsoft researchers published the results of a study of health-related Web searches on popular search engines as well as a survey of the company’s employees.

The study suggests that self-diagnosis by search engine frequently leads Web searchers to conclude the worst about what ails them.

Further evidence that your Google home page is no subsitute for having a medical home to can help guide you through the complex decisions and treatment options of modern medicine.