<prompt> Which of the following is wrong about isolation?Measle-isolation 3 days after app orf rashChicken pox - 6 days after app of rashHerper zoster - 6 days after app of rashRubella - 7 days after app of rash  <response>: There is no isolation in German measles ,except that women in 1st trimester or sexually active, Non immune women in child bearing years not using contraceptive measures should not be exposed. Reference:Park;s textbook of preventive and social medicine,K.Park,23rd edition,page no:120 p 