Despite increased awareness of the prevalence and virulence of the potentially deadly, drug-resistant staph germ known as MRSA, hospitals in Washington and across the nation may not be doing enough to combat the problem, infection control workers said. An informal survey of about 2,100 infection specialists, including some in Spokane, showed that half of the experts thought their institutions could or should do more to prevent and control methicillin-resistant Staphylococcus aureus.