🌧️ Monsoon Season — June to September
India's highest disease burden season. Stagnant water breeds mosquitoes, contaminated water spreads infections.
Common diseases this season
Dengue fever
High fever, severe headache, body pain, rash
Serious
Malaria
Cyclical fever, chills, sweating, headache
Serious
Typhoid fever
Sustained fever, stomach pain, weakness
Serious
Leptospirosis
Fever, muscle pain, red eyes, jaundice
Serious
Hepatitis A & E
Jaundice, dark urine, fever, nausea
Serious
Cholera
Severe watery diarrhea, dehydration
Serious
Chikungunya
Fever, severe joint pain, rash
Moderate
Gastroenteritis
Vomiting, diarrhea, stomach cramps
Moderate
Protect yourself this monsoon
- Eliminate stagnant water around your home — flower pots, coolers, containers. Aedes mosquitoes breed in clean stagnant water, not dirty drains.
- Drink only boiled or filtered water. Avoid street food and cut fruits during peak monsoon months.
- Use mosquito repellent and sleep under nets, especially for children. Peak mosquito activity is dawn and dusk.
- If you develop fever during monsoon — even mild fever — get a dengue NS1 test and malaria smear within 24 hours. Don't wait to see if it passes.
- Avoid wading through floodwater without protection — leptospirosis spreads through contaminated floodwater entering cuts or eyes.
- Get vaccinated for typhoid and Hepatitis A if you haven't — especially before travel to endemic areas.
🍂 Post-Monsoon — October to November
Dengue peaks after monsoon ends. Residual stagnant water continues to breed mosquitoes even as rains stop.
Common diseases this season
Dengue fever (peak)
High fever, severe headache, body pain, rash
Serious — peak risk
Chikungunya
Fever, severe joint pain that persists for weeks
Moderate
Viral fever
Fever, body ache, fatigue, runny nose
Mild
Eye flu (conjunctivitis)
Red eyes, discharge, irritation, sensitivity to light
Mild
Key advice for post-monsoon
- October and November historically record India's highest dengue case counts — stay vigilant even though rains have stopped.
- Clear all residual stagnant water — tyres, buckets, rooftop tanks. Mosquitoes can breed in as little as one teaspoon of water.
- Any fever in this period — test for dengue first. Don't assume it's a seasonal cold.
- Chikungunya joint pain can persist for months — see a doctor early for proper management rather than self-medicating with painkillers alone.
❄️ Winter — December to February
Respiratory infections peak. Cold air, indoor crowding, and low immunity from reduced sunlight drive seasonal illness.
Common diseases this season
Influenza
High fever, severe body ache, cough, fatigue
Moderate
Pneumonia
Fever, cough with phlegm, chest pain, breathlessness
Serious
Bronchitis
Persistent cough, chest heaviness, mucus production
Moderate
Asthma attacks
Wheezing, chest tightness, shortness of breath
Serious if severe
Common cold
Runny nose, sore throat, mild fever, sneezing
Mild
Measles (children)
High fever, rash starting from face, cough, red eyes
Serious
Key advice for winter
- Get the annual flu vaccine — available at most government hospitals and pharmacies from October. Especially important for elderly, diabetics, and those with heart or lung conditions.
- Air pollution is at its worst in winter across North India. Wear N95 masks outdoors, avoid morning outdoor exercise on high AQI days.
- Ensure children and elderly get adequate Vitamin D — sunlight exposure is reduced in winter and deficiency worsens immunity.
- Asthma and COPD patients should keep reliever inhalers accessible — cold air is a common trigger. Don't go outdoors without a scarf covering your mouth and nose.
- Cough lasting more than 2 weeks with evening fever — get a TB test. TB transmission peaks when people gather indoors in winter.
☀️ Summer — March to May
Heat-related illness, dehydration, and food poisoning from poor food storage in hot weather dominate this season.
Common conditions this season
Heatstroke
Very high body temp, hot dry skin, confusion, unconsciousness
Emergency
Heat exhaustion
Heavy sweating, weakness, cold pale skin, nausea
Moderate
Dehydration
Dark urine, dizziness, headache, dry mouth
Moderate
Food poisoning
Vomiting, diarrhea, stomach cramps within hours of eating
Moderate
Prickly heat / heat rash
Itchy red rash in skin folds, small blisters
Mild
Urinary tract infection
Burning urination, frequent urge, lower abdominal pain
Moderate
Key advice for summer
- Drink at least 3-4 litres of water daily — more if working outdoors. Don't wait until you feel thirsty. Thirst means you're already mildly dehydrated.
- Heatstroke warning: if someone has hot dry skin (not sweating) and is confused or unconscious — cool them with wet cloths immediately and call 112. This is a medical emergency.
- Avoid outdoor work or exercise between 11am–4pm during peak summer. If unavoidable, wear light cotton clothing and a hat.
- Refrigerate cooked food immediately — food spoils within 2 hours at summer temperatures. Never eat food left out overnight.
- UTIs are more common in summer due to concentrated urine from dehydration. Increase water intake at the first sign of burning urination.
- ORS (Oral Rehydration Solution) sachets — keep at home during summer. Available at all pharmacies. Use for any vomiting or diarrhea episode before seeing a doctor.