It is true that the five stages of grief are not experience in a neat or sequential order because others do not have to go through the five stages in order to heal. Some people resolve their grief without going through any of these stages of Denial, Anger, Bargaining, Depression and Acceptance
It takes about 90 days so that the antibodies can get in action. This process is known as seroconversion and antibodies are not produced right after the person has been infected.
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What is best to do in the situation is to have the bystander call 911 while you start CPR. It is best to do it immediately to ensure that the infant is receiving circulation and oxygen.