You have opened the airway using a head-tilt, chin-lift and are ready to ventilate an apneic patient with a pocket mask. the first ventilation you attempt is unsuccessful. you should immediately:

If scientists are trying to use what they know about hsv to devise a means of protecting other people from being infected, which of the following would have the best chance of lowering the number of new cases of infection? a) vaccinate of all persons with preexisting cases of hsvb) interfere with new viral replication in preexisting cases of hsvc) treat hsv lesions to shorten the breakoutd) educate people about avoiding sources of infection