Hantavirus complications in a postpartum woman in India: What this 2016 case study reveals about the severity of the disease

A 30-year-old woman in India gave birth and days later, she developed a fever. Then shortness of breath. Then her organs started shutting down. She was admitted to the ICU with hantavirus pulmonary syndrome, a disease so rare that there had never been a recorded case of it striking a pregnant or postpartum woman in India before. Her case, documented in the Indian Journal of Critical Care Medicine in 2016, reveals something troubling: hantavirus doesn't follow the rules we think it does, and it's more dangerous than we give it credit for.

This wasn't someone who worked in a warehouse or a farm. She wasn't exposed to rodent droppings while cleaning an old building. The exact source of her infection isn't even clear in the medical literature. What matters is that she got it, and once the virus started replicating, things got bad fast.

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A disease we're not looking for

Here's the problem: when the woman showed up in the hospital 8 days after giving birth with fever and respiratory distress, doctors started looking for postpartum complications. Infection from delivery. Pneumonia from aspiration. Blood clots. They're not thinking about hantavirus.

"A 30-year-old female developed severe pain in abdomen, fever, and giddiness 8 days, following full-term normal vaginal delivery. Her antepartum and peripartum course were uneventful. She was admitted to a private nursing home for the above symptoms. They noted gaping of her episiotomy wound and resuturing was done. She was also evaluated for fever and was found to have a platelet count of 50,000/cumm. The next day, she had a worsening fever, started developing breathlessness, and was found to be hypotensive. She was conservatively managed and was shifted to our hospital in view of worsening of above-mentioned symptoms," doctors of Holy Family Hospital, Maharashtra has said in the journal.

"On admission to our hospital, she was found to be severely tachypneic, had severe hypotension needing inotropic supports. She was intubated and mechanically ventilated. On evaluation, she had a platelet count of 40,000/cumm, deranged liver function tests, and a creatinine of 4.1 mg/dl. Ultrasonography abdomen and pelvis and two-dimensional echocardiography were normal. With a provisional diagnosis of acute febrile illness with severe sepsis and septic shock, further evaluation to find out the etiology was done. Polymerase chain reaction for leptospira and dengue IgM was negative; malaria smear showed no parasites. However, IgM antibodies for hantavirus were tested positive," the study report adds.

Why pregnancy and postpartum matter

According to research on hantavirus in pregnancy, infected pregnant women and their fetuses appear to have more severe clinical symptoms and worse outcomes than non-pregnant infected individuals. The virus seems to exploit the physiological changes that come with being pregnant or newly postpartum. The body's compromised state becomes a liability.

The woman's case showed exactly this. Once the virus took hold, everything cascaded. She developed acute respiratory distress syndrome—the lungs essentially filling with fluid while the body's immune system throws itself at the problem and makes things worse. She had multiorgan dysfunction. Her kidneys were affected. Her liver showed signs of damage. Her blood wasn't clotting properly. By every measure, she was in critical condition.

Hantavirus infection, once thought to be rare in India, needs to be considered in the differential diagnosis of ARDS and especially in association with pregnancy and postpartum period, the doctors have said in the report.

Hantavirus outbreak 2026

A rare hantavirus outbreak aboard a Dutch cruise ship in the Atlantic Ocean has killed three people and infected at least eight others, prompting international health authorities to trace contacts across multiple continents. The World Health Organization confirmed on May 4, 2026, that the disease responsible is the Andes virus strain—the only type of hantavirus known to spread directly between humans.

The MV Hondius, carrying 147 people from 23 countries, departed from Ushuaia, Argentina, on April 1. A Dutch citizen who had been on a bird-watching trip through Argentina, Chile, and Uruguay developed fever and gastrointestinal symptoms on April 6 while aboard. He died on April 11. His wife, who traveled with him, fell ill later and died on April 26 after disembarking in South Africa. A German passenger also died, bringing the death toll to three as of early May.

According to the WHO, the couple likely contracted the virus during their overland journey in South America before boarding the ship. The incubation period for hantavirus is 4 to 42 days, meaning they were probably infected weeks before symptoms appeared. Once aboard, the virus spread to close contacts through saliva and respiratory secretions.
International Response Mobilizes
As of May 8, WHO reported six confirmed cases and two suspected cases. Passengers had already disembarked at multiple ports—Saint Helena, South Africa, and elsewhere—before health authorities understood the outbreak was occurring. The situation scattered potential cases across multiple countries, including the United States, Canada, France, Spain, Switzerland, Germany, and Singapore.

The CDC classified the situation as a level 3 response—its lowest emergency level. Still, health authorities in affected countries launched contact tracing operations. South Africa's health ministry identified 62 potential contacts and located 42 of them, with all testing negative so far. The remaining 20 contacts are still being traced, and some may have already left the region.

Five U.S. states began monitoring passengers. Two Britons tested positive for hantavirus. Swiss authorities carried out contact tracing. And a flight attendant who attended to one of the deceased patients was admitted to a hospital in the Netherlands for evaluation, though she later tested negative.

Why this outbreak matters
The Andes virus is unusual for hantaviruses. Most hantavirus transmission comes from rodents—through dust contaminated with their urine, saliva, or feces. But the Andes strain can spread person-to-person, though this requires close contact with someone who is actively ill.

Hantavirus pulmonary syndrome, caused by the Andes virus, kills about 35% of people who develop respiratory symptoms. Early symptoms—fever, muscle aches, fatigue—can look like the flu, making diagnosis tricky. Within days, patients can deteriorate rapidly, developing pneumonia and acute respiratory distress.

The WHO emphasized that this is not the next COVID-19. "This is a serious infectious disease, but most people will never be exposed to this," said Maria Van Kerkhove, WHO's chief of Epidemic and Pandemic Preparedness and Prevention. The virus doesn't spread through the air. It requires close contact. And while the outbreak is genuinely concerning for those involved, the global risk remains low.

Ship's final destination
The MV Hondius was originally heading toward the Canary Islands. The president of the Canary Islands initially objected to the ship's arrival, citing health concerns. But Spain's health ministry eventually approved it, and the ship headed to Tenerife with additional medical resources onboard.
On May 6, Spanish health authorities announced that passengers would be allowed to disembark there.