Common Diseases in Indian Families and What Prevents Them

The infections that matter in an Indian household are not the same as those in a European or North American one. Water and food-borne illness carries far more weight, mosquito-borne disease is seasonal and significant, and tuberculosis remains a genuine background presence rather than a historical curiosity.

This page separates what a vaccine can prevent from what it cannot, because a fair amount of household illness in India needs water safety, mosquito control or metabolic management rather than immunisation, and it helps to know which is which.

Water and food-borne illness

This group is the most consistently underestimated. Several of these are vaccine-preventable, and the vaccines are often not taken because the illnesses are treated as an unavoidable fact of life.

• Typhoid: vaccine-preventable with the conjugate vaccine, from 6 months of age. Drug-resistant strains have made prevention considerably more important.
• Hepatitis A: vaccine-preventable. As sanitation improves, infections shift from mild childhood cases to more severe adult ones.
• Hepatitis E: waterborne, no widely available vaccine here, and particularly dangerous in pregnancy. Water precautions are the protection.
• Rotavirus: a leading cause of severe infant diarrhoea, vaccine-preventable and now in the national schedule.
• Cholera and other diarrhoeal illness: mainly addressed through water and sanitation.

Respiratory infections

Made worse across urban India by high particulate air pollution, which raises the background level of airway irritation on which infections land.

• Influenza: vaccine-preventable, worth repeating annually, timed around the monsoon in much of India.
• Tuberculosis: India carries a large share of the global burden. BCG is given at birth; latent infection is common in adults and testable.
• Pneumococcal pneumonia: vaccine-preventable, and particularly important for older adults and people with diabetes.
• Pertussis: vaccine-preventable; adults are the usual source of infection in newborns.
• COVID-19: vaccine-preventable, with guidance that continues to evolve.

Mosquito-borne illness

Seasonal, largely monsoon-linked, and mostly not vaccine-preventable in routine practice. This is where households often expect a vaccine and there is not one.

• Dengue: no routine vaccine available here; bite avoidance and eliminating standing water are the measures that work.
• Chikungunya: no routine vaccine; same precautions.
• Malaria: prevented with bite avoidance and, where relevant, prophylactic medication.
• Japanese encephalitis: vaccine-preventable, and included in the national schedule in endemic districts.

Conditions that are not infections at all

A large and growing share of illness in Indian families is metabolic rather than infectious, and no vaccine touches it. It is worth stating plainly so that vaccination is not mistaken for a general health measure.

Type 2 diabetes, hypertension, cardiovascular disease and non-alcoholic fatty liver disease are now extremely common, often with earlier onset than in Western populations. Vaccination is still relevant to these families, diabetes raises the risk of pneumococcal and hepatitis B disease considerably, but as a supporting measure, not as treatment.

A practical household approach

Rather than working through diseases one at a time, most families find it easier to think by person.

• Infants and children: keep to the national schedule, and consider typhoid conjugate and hepatitis A.
• Adolescents: HPV, and a Tdap booster.
• Adults: Td every 10 years, hepatitis B if never vaccinated, annual influenza.
• Pregnant women: Tdap at 27 to 36 weeks and inactivated influenza in any trimester.
• Grandparents: annual influenza, pneumococcal, shingles from 50, and a Tdap dose before spending time with a new baby.
• Anyone with diabetes: pneumococcal and hepatitis B move up the priority list.

Frequently asked questions