Aid workers flying in from west Africa to be held for 21 daysGovernors: Were not comfortable with voluntary quarantineCraig Spencer, 33, in hospital after becoming infectedNew York, the city that never shrieksAnyone flying into New York and New Jersey after having contact with Ebola sufferers in west Africa will be subjected to a mandatory 21-day quarantine, the governors of the two states announced on Friday, adding that one returning medic had already been detained.Andrew Cuomo of New York and Chris Christie of New Jersey unveiled the joint policy, which goes beyond federal rules set out by the Centers for Disease Control and Prevention (CDC), as officials indicated the Obama administration was considering a similar rule throughout the US.