Which vaccine should David receive as the 5th dose during his upcoming visit?

David should receive the DTaP vaccine as his 5th dose during his upcoming visit. The DTaP vaccine protects against diphtheria, tetanus, and pertussis (whooping cough). The recommended immunization schedule for children includes a series of five doses of DTaP, usually administered at ages 2, 4, 6, 15-18 months, and finally at 4-6 years old.

Since David is due for his 5th dose, it indicates he is likely in the age range where this final dose is necessary to complete the primary series and provide adequate protection from these infections as he approaches school age. This series is crucial because it helps establish and boost immunity to these potentially severe diseases.

Other vaccines listed are part of different vaccination schedules or are given at different ages. For example, IPV (the inactivated poliovirus vaccine) is also given in multiple doses, but the one being asked for is specifically the 5th dose of DTaP for David's immunization needs at this time. In contrast, MMRV, which covers measles, mumps, rubella, and varicella, is typically administered at ages 1 and 4. HepB