Monsoon Health Risks in Ahmedabad: What DHS's Specialists Want You to Know

By the Specialist Team at DHS Multispecialty Hospital · Published July 18, 2025 · 7 min read

Every year between July and September, Ahmedabad's hospitals see a predictable and significant surge in patients — not for injuries or chronic conditions, but for monsoon-related illnesses that could largely have been prevented or caught earlier. Stagnant floodwater in low-lying areas, overwhelmed drainage systems, humidity-soaked air, and the unavoidable temptation of street food in the rain all conspire to make the monsoon season a genuinely challenging time for public health across Gujarat. At DHS Multispecialty Hospital, our Internal Medicine, Gastroenterology, and Pulmonology teams want Ahmedabad residents to understand the real risks this season — and know exactly when it's time to stop waiting and come in.

Vector-Borne & Infectious Diseases: What Our Internal Medicine Team Sees Every Monsoon

The standing water that accumulates after Ahmedabad's heavy monsoon rains is more than a nuisance — it is a breeding ground for disease-carrying mosquitoes and bacteria. Our Internal Medicine department manages the highest volume of monsoon-related admissions each year, and the pattern is remarkably consistent.

Dengue Fever

Dengue fever is caused by the dengue virus transmitted by the Aedes aegypti mosquito, which breeds in clean, stagnant water — flower pots, water storage containers, cooler tanks, and building sumps. Dengue is not a disease of dirty water; it thrives in urban Ahmedabad neighbourhoods including Vastrapur, Bodakdev, Satellite, and Navrangpura precisely because these areas have plentiful artificial water collections.

Classic dengue presents with:

• Sudden high fever (39–40°C) that appears rapidly
• Severe headache, especially behind the eyes (retro-orbital pain)
• Intense joint and muscle aches — often called "breakbone fever"
• Skin rash appearing 3–4 days into the illness
• Fatigue and loss of appetite

Red flag warning signs that require immediate hospital care include bleeding from the gums or nose, vomiting blood, severe abdominal pain, and sudden improvement followed by rapid deterioration — this pattern can signal dengue haemorrhagic fever, a life-threatening complication.

Malaria

Malaria remains endemic in parts of Gujarat and spikes sharply during the monsoon. The Plasmodium vivax strain is most common in Ahmedabad, though P. falciparum cases, which are more dangerous, are also seen. The classic cyclical fever pattern — chills, fever spike, and sweating every 48–72 hours — is the hallmark, but many urban patients present atypically with persistent low-grade fever, headache, and fatigue that they mistake for a viral flu. A simple blood smear or rapid malaria antigen test quickly confirms or rules out the diagnosis.

Leptospirosis

Leptospirosis is severely underdiagnosed in Ahmedabad and across Gujarat. It is contracted by contact with water or soil contaminated with the urine of infected animals — particularly common when residents wade through floodwater during heavy monsoon days. If you have waded through stagnant water and subsequently develop fever, muscle pain (especially in calves), red eyes, and jaundice within 2–14 days, leptospirosis must be ruled out urgently. Left untreated, it can cause liver failure, kidney failure, and meningitis.

Typhoid Fever

Typhoid fever, caused by Salmonella typhi, spreads through contaminated water and food. Sustained fever that climbs in a stepwise fashion over 3–5 days, accompanied by abdominal discomfort, headache, and a relative slowing of the heart rate (relative bradycardia), should raise suspicion — particularly if the patient has consumed water from uncertain sources or eaten outside frequently during the monsoon.

Waterborne & Foodborne Illness: Insights from Our Gastroenterology Department

Monsoon season is peak season for gastrointestinal infections across Ahmedabad. Floodwater contaminates municipal water supply pipelines, street food preparation hygiene deteriorates in the rain, and the warm, humid conditions accelerate bacterial growth in food. Our Gastroenterology team sees a dramatic rise in admissions from mid-July through August every year.

Acute Gastroenteritis

Acute gastroenteritis — inflammation of the stomach and intestines — is the most common monsoon illness we treat. It presents with sudden-onset nausea, vomiting, watery diarrhoea, abdominal cramps, and sometimes low-grade fever. Most cases are caused by viral pathogens (norovirus, rotavirus) or bacteria (E. coli, Salmonella, Shigella). Mild cases can be managed at home with oral rehydration, but the condition becomes dangerous when dehydration sets in — especially in young children, the elderly, and diabetic patients.

Seek hospital care immediately if you notice:

• Diarrhoea more than 8–10 times in 24 hours
• Blood or mucus in the stool
• Inability to keep even sips of water down for more than 6 hours
• Signs of severe dehydration — sunken eyes, dry mouth, no urination for 8+ hours, extreme weakness
• High fever (above 39°C) accompanying the gastrointestinal symptoms

Hepatitis A

Hepatitis A, a viral liver infection spread through contaminated water and food, peaks during and after the monsoon. Initial symptoms mimic gastroenteritis — nausea, vomiting, loss of appetite — but the telltale signs are yellow discolouration of the skin and eyes (jaundice), dark (cola-coloured) urine, and pale stools appearing within 1–2 weeks of the initial illness. Most patients recover with supportive care, but monitoring liver function through blood tests is essential to catch severe cases early.

Cholera & Waterborne Bacterial Infections

Cholera, caused by Vibrio cholerae, can cause profuse, rice-water diarrhoea leading to life-threatening dehydration within hours. While large outbreaks are less common in urban Ahmedabad today, sporadic cases do occur, particularly in areas with compromised water infrastructure. Any sudden, extremely profuse diarrhoea without abdominal cramps (which distinguishes it from typical gastroenteritis) should be treated as an emergency.

Respiratory Illness: What Our Pulmonology Team Tracks During Monsoon

The link between monsoon season and respiratory illness is well established, but often underappreciated by patients. The combination of dampness, mould, reduced ventilation in homes sealed against rain, and persistent viral circulation creates a perfect environment for respiratory problems. Our Pulmonology department manages a wide spectrum of monsoon respiratory illness, from routine infections to serious exacerbations.

Viral Upper and Lower Respiratory Tract Infections

The humidity and crowding of monsoon season accelerates the spread of respiratory viruses. Upper respiratory tract infections (URIs) — the common cold, sinusitis, and pharyngitis — are extremely prevalent. These typically resolve on their own in 7–10 days with rest and supportive care. However, when infection descends into the lower respiratory tract, causing acute bronchitis or pneumonia, medical intervention becomes essential. Warning signs include a productive cough lasting more than 2 weeks, fever above 38.5°C, chest pain, and shortness of breath.

Asthma Exacerbations

For the estimated 10–15% of Ahmedabad's population living with asthma, the monsoon is the most dangerous season of the year. High humidity, airborne mould spores from damp walls and surfaces, and increased indoor dust mite activity combine to trigger severe exacerbations. Many patients who are well-controlled for most of the year experience acute attacks during July–September. If you have asthma and notice your reliever inhaler use increasing significantly, your peak flow dropping, or waking up at night with breathlessness, contact your pulmonologist promptly — do not wait for a full-blown attack.

Fungal Respiratory Infections

Less commonly recognised but clinically significant, fungal respiratory infections — particularly from mould species like Aspergillus — can occur in individuals with weakened immunity (diabetes, those on steroids, post-COVID patients) who are heavily exposed to damp, mouldy environments. Persistent cough unresponsive to antibiotics, low-grade fever, and unexplained weight loss in an immunocompromised patient during monsoon season warrant pulmonary investigation including HRCT and bronchoscopy if indicated.

When to Come to the Hospital Immediately

Practical Monsoon Prevention for Ahmedabad Families

Our specialists consistently find that most monsoon illnesses seen at DHS were preventable. These measures are specific to the urban Ahmedabad context:

Water Safety

• Drink only filtered (RO-purified) or boiled water — especially during and after heavy rains when municipal supply may be temporarily compromised
• Avoid ice from unknown sources at restaurants and street stalls
• Check your building's overhead water tank — clean it at the start of monsoon and inspect for cracks or animal access
• Do not let water stagnate in cooler tanks, plant pots, buckets, or any container for more than 48 hours — this eliminates dengue mosquito breeding

Food Safety

• Be cautious with raw salads, cut fruit, and chaat sold at roadside stalls during heavy rain periods — bacterial contamination risk is highest then
• Choose freshly cooked, piping-hot food over foods displayed for extended periods
• Wash all vegetables and fruits thoroughly before preparation
• Refrigerate leftovers promptly and reheat fully before eating — bacteria multiply rapidly at room temperature in humid conditions

Mosquito Control

• Use mosquito nets, repellents, and wear long sleeves in the evening (peak Aedes biting time is early morning and late afternoon)
• Apply DEET-based repellent on exposed skin before going outdoors
• Ensure all window and door screens are intact and without tears
• Report stagnant water in your neighbourhood to the Ahmedabad Municipal Corporation (AMC) fogging programme

Respiratory Protection

• Ventilate your home regularly even during rain — damp, unventilated rooms breed mould spores that trigger respiratory problems
• Asthma patients: review your action plan and ensure you have adequate rescue medication on hand before the season peaks
• Avoid wading through floodwater where possible — it carries bacteria (including leptospirosis risk) and chemical contaminants
• If you do wade through floodwater, wash exposed skin thoroughly with soap and water immediately

Monsoon illnesses can escalate from manageable to critical within 24–48 hours. When in doubt, a consultation is always better than waiting. Our specialists are here to help Ahmedabad families navigate this season safely.

At DHS Multispecialty Hospital, our Internal Medicine, Gastroenterology, and Pulmonology departments work as a coordinated team — so if your monsoon illness touches more than one system (as they often do), you don't need to visit multiple hospitals. Our 24/7 emergency, in-house laboratory for rapid blood and stool testing, and dedicated specialist wards mean faster diagnosis and comprehensive care under one NABH-accredited roof in the heart of Ahmedabad's Gurukul.

About this article. Written by the Specialist Team at DHS Multispecialty Hospital, Ahmedabad — a NABH-accredited multispecialty hospital with departments in Internal Medicine, Gastroenterology, Pulmonology, and 15+ other specialties. This article is for health awareness and informational purposes only and does not substitute personalised medical advice. If you are unwell, please consult a qualified physician promptly.