Which intervention should the nurse employ to reduce trauma caused by vaccine administration to an infant? 1. Use a 5/8-inch (1.6-cm) needle. 2. Simultaneously administer vaccines at separate sites....

Which intervention should the nurse employ to reduce trauma caused by vaccine administration to an infant?

1. Use a 5/8-inch (1.6-cm) needle.

2. Simultaneously administer vaccines at separate sites.

3. Aspirate to verify needle placement.

4. Breast-feed right before administering the vaccines.