Prevention of Pediatric Pneumonia and Vaccines
WHO IMCI / ARI Control Program — Prevention Framework
The WHO ARI (Acute Respiratory Infection) Control Program aims to reduce LRTI mortality in children <5 years by:
- Early recognition using fast breathing and chest indrawing
- Judicious antibiotic use (oral amoxicillin / cotrimoxazole)
- Applicable where infant mortality rate >40/1000 live births
- Basis: In developing countries, common bacteria (H. influenzae, S. pneumoniae, Staphylococci) are sensitive to amoxicillin and cotrimoxazole
Vaccines for Pneumonia Prevention
Pneumococcal Conjugate Vaccine (PCV)
| Feature | Detail |
|---|
| Target organism | Streptococcus pneumoniae |
| Types | PCV10, PCV13 (most used globally) |
| Schedule (India IAP) | 6 weeks, 10 weeks, 14 weeks (primary); booster at 12–15 months |
| Coverage | Protects against invasive pneumococcal disease: pneumonia, meningitis, sepsis |
| India NIS | Introduced in Universal Immunization Programme (UIP) in select states; expanding nationally |
Hib Vaccine (H. influenzae type b conjugate vaccine)
| Feature | Detail |
|---|
| Target organism | H. influenzae type b |
| Schedule | Given as part of Pentavalent vaccine: 6, 10, 14 weeks |
| Coverage | Prevents H. influenzae pneumonia, meningitis, epiglottitis |
| India NIS | Included in UIP as Pentavalent (DPT + HepB + Hib) |
Influenza Vaccine
| Feature | Detail |
|---|
| Target organism | Influenza A and B |
| Schedule | Annual; recommended from 6 months of age in high-risk children |
| Who gets it | Children with asthma, cardiac disease, immunocompromised, CF, chronic lung disease |
| Type | Inactivated trivalent/quadrivalent influenza vaccine (TIV/QIV) |
India Universal Immunization Programme (UIP) — Relevant Vaccines
| Age | Vaccine | Relevance to Pneumonia |
|---|
| Birth | BCG, OPV-0 | TB prevention (indirectly) |
| 6 weeks | DPT-1, OPV-1, HepB-1, Hib-1 | Hib pneumonia prevention |
| 10 weeks | DPT-2, OPV-2, HepB-2, Hib-2 | Hib pneumonia prevention |
| 14 weeks | DPT-3, OPV-3, HepB-3, Hib-3 | Hib pneumonia prevention |
| 9 months | Measles | Prevents measles pneumonia |
| 16–18 months | DPT Booster, OPV Booster, Measles-2 | Booster protection |
DPT contains pertussis component — prevents whooping cough associated pneumonia.
Measles vaccine — prevents measles-associated pneumonia (secondary bacterial superinfection, especially staphylococcal).
Non-Vaccine Prevention Measures
Modifiable Risk Factor Reduction
| Risk Factor | Prevention Strategy |
|---|
| Low birth weight | Antenatal care; nutrition during pregnancy |
| Malnutrition | Adequate complementary feeding; growth monitoring |
| Vitamin A deficiency | Vitamin A supplementation (WHO schedule) |
| Lack of breastfeeding | Exclusive breastfeeding for 6 months |
| Indoor air pollution | Reduce biomass fuel combustion; improved cookstoves; ventilation |
| Passive smoking | Smoke-free household |
| Crowding | Improve housing conditions |
Vitamin A Supplementation (WHO/IMNCI Schedule)
| Age | Dose | Occasion |
|---|
| 9 months | 100,000 IU | With measles immunization |
| 16–18 months | 200,000 IU | With DPT booster |
| 24, 30, 36, 42, 48, 54, 60 months | 200,000 IU | Every 6 months |
Vitamin A deficiency is a significant risk factor for severity and mortality of childhood pneumonia.
Breastfeeding — Key Protective Role
- Exclusive breastfeeding for 6 months significantly reduces risk of pneumonia
- Secretory IgA in colostrum provides passive immunity
- RSV protection: High secretory IgA in colostrum reduces risk of infant hospitalization for bronchiolitis / pneumonia
- Antibodies in breast milk provide broad protection against respiratory pathogens
Chemoprophylaxis
- Cotrimoxazole prophylaxis — given in HIV-infected children to prevent Pneumocystis jirovecii pneumonia (PCP)
- Palivizumab (anti-RSV monoclonal antibody) — monthly IM injection; for high-risk infants (premature, CHD, immunocompromised); prevents RSV bronchiolitis / pneumonia
Summary: Prevention Hierarchy
PRIMARY PREVENTION
├── Immunization (PCV, Hib/Pentavalent, Influenza, Measles)
├── Exclusive breastfeeding
├── Vitamin A supplementation
├── Reduce indoor air pollution
└── Malnutrition management
SECONDARY PREVENTION
├── Early recognition (fast breathing / chest indrawing)
├── Prompt antibiotic treatment (ARI program)
└── Appropriate referral of severe cases
