For both phenotypes , provider hands were a common reservoir of origin proximal to the transmission event ( @ % -LSB- @/@ -RSB- hand origin for E@ and @ % -LSB- @/@ -RSB- hand origin for E@ ) and site of transmission ( @ % -LSB- @/@ -RSB- hand transmission location for E@ and @ % -LSB- @/@ -RSB- hand transmission location for E@ ) .