Instead, they poke around out back, rattle door knobs and try to work their way in.

FORBES: How Information Security Drives SMB Growth Partnerships

Ten years after the outbreak, apartment and office blocks still boast of how many times daily they sanitise lift buttons, hand rails, door knobs and almost all public surfaces.

BBC: Sars legacy still felt in Hong Kong, 10 years on

At Los Angeles International Airport, custodians have been instructed to pay additional attention to sanitizing door knobs, handrails and faucets in airport restrooms, according to a statement from Los Angeles World Airports.

CNN: U.S. prepares for possible swine flu epidemic as global cases rise

Serial entrepreneur and founder of SA Baxter, high-end maker of architectural hardware such as door knobs and lights in New York's Hudson Valley, Baxter has managed to clock double-digit sales growth during the recession.

FORBES: Entrepreneurs