They worry about close contact with others who may be sick.

VOA: special.2009.07.14

Close contact with sharks has its critics.

VOA: special.2009.06.16

They say close physical contact is impossible to avoid.

VOA: special.2010.05.21

Security officials in Massachusetts say there are no known threats to Boston and that Thursday's raids at a suburban home and a fuel station followed a period of close, confidential contact with New York's police department and federal agents.

VOA: standard.2010.05.14