A girl looks out through a hole in the wall of her house as a health worker prepares for COVID-19 testing in Jamsoti village, Uttar Pradesh state, India, on June 9, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

In Jamsoti, a village tucked deep inside India's most populous state of Uttar Pradesh, the common refrain among the villagers is that the coronavirus spreads only in cities. The deadly infection, they believe, does not exist in villages.

So when a team of recently approached Manju Kol to get vaccinated, she locked up her house, gathered her children and ran to the nearby forest.

The family hid there for hours and returned only when the workers left in the evening.

"I would rather die than take the ," said Kol.

A deadly surge of coronavirus infections that ripped through India in April and May, killing more than 180,000, has tapered off and new cases have declined. But the relief could be fleeting as a significant amount of the population is still reluctant to get the shots. This has alarmed who say vaccine hesitancy, particularly in India's vast hinterlands, could put the country's fragile gains against COVID-19 at risk.

"Vaccine hesitancy poses a risk to ending the pandemic in India," said retired virologist and pediatrician Dr. T. Jacob John. "The more the virus circulates, the more it can mutate into dangerous new variants that can undermine vaccines."

Delivering vaccines in the world's second-most populous country was always going to be challenging. Even though India did relatively well at the beginning of its mammoth vaccination drive, the campaign hit a snag almost immediately due to shortages and a complicated vaccine policy, exacerbating existing inequalities.

Women return to their village after attending an awareness program on getting tested and vaccinated against COVID-19 in Jamsoti village, Uttar Pradesh state, India, on June 10, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

Only less than 5% of India's people are fully immunized. Experts caution that by the end of the year, vaccination rates must go up significantly to protect most Indians from the virus that has so far already killed more than 386,000 people—a figure considered to be a vast undercount.

Starting Monday, every adult in India will be eligible for a shot paid for by the . The new policy, announced last week, ends a complex system of buying and distributing vaccines that overburdened states and led to inequities in how the shots were handed out.

There is still widespread hesitancy fueled by misinformation and mistrust, particularly in rural areas where two-thirds of the country's nearly 1.4 billion population lives.

Health workers face stiff resistance from people who believe that vaccines cause impotence, serious side effects and could even kill. Some simply say they do not need the shots because they're immune to the coronavirus.

Health workers arrive at a house during a vaccination drive against COVID-19 in Jamsoti village, Uttar Pradesh state, India, on June 8, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

Rumors about jabs disrupting the menstruation cycle and reducing fertility have also contributed to fear and skewed the data in favor of men. In almost every Indian state, more men are getting vaccinated than women—and that gap is widening further every day.

Quashing such rumors and conspiracy theories is a tough order for many, particularly in India's tribal-dominated districts that have recorded disproportionately lower vaccine coverage in comparison with other districts, according to official data.

Yogesh Kalkonde, a public health doctor in Gadchiroli, a tribal area in the western state of Maharashtra, said his district was overrun with the belief that the vaccine is more dangerous than the virus.

Some in the area have raised the untrue claim that the shots can cause infertility, Kalkonde said. Others simply question its effectiveness.

A health worker conducts COVID-19 test on Ram Yadav at Sikanderpur village, Uttar Pradesh state, India, on June 9, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

"We have to convince people, go door to door, and rely on people who have taken the vaccine to spread the word," he said. "It's an extremely slow process."

There is some pushback. State governments have mounted aggressive awareness campaigns through posters and radio announcements to allay some of the anxiety and confusion. Some local administrations have started giving rides to vaccination centers, especially from remote villages. Volunteers are conducting door-to-door surveys and even small rallies to encourage people to get the jab.

For months, Vibha Singh, a government-appointed nurse, has gone door-to-door in the villages of Uttar Pradesh.

"People tell us to leave or they would beat us," said Singh. "Sometimes they also throw stones and bricks at us."

Prime Minister Narendra Modi and other leaders have routinely spoken about the need to shun , but health experts say more needs to be done.

A health worker, right, persuades village woman Maju Kol, left, to get vaccinated against the coronavirus at Jamsoti village, Uttar Pradesh state, India, on June 8, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

"We need to explain it clearly to people, ideally through local trusted networks," said K. Srinath Reddy, president of the Public Health Foundation of India. He said state governments should bolster local self-help groups, village councils and ask local religious leaders to step in.

"It requires a conversation, not just top-down messaging," he said.

Dr. Vinod K. Paul, head of the country's COVID-19 task force, acknowledged the immediate need to address the problem but said public participation to dispel rumors and misinformation was important.

"It is the responsibility not only of the government but also the society as a whole to create such an environment in which an unfounded hesitancy is addressed," said Paul.

Virologists and public health experts say eradicating doubts about the vaccine in rural India and inoculating people quickly should be of paramount importance since the majority of Indians live in the hinterlands. Already, urban dwellers are getting the shots much faster.

  • Children watch as health workers persuade elders to get vaccinated against the coronavirus at Jamsoti village, Uttar Pradesh state, India, on June 8, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

  • A woman watches health workers leaving, standing in front of her house at Jamsoti village, in Chandauli district, Uttar Pradesh state, India, on June 8, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

  • A vaccination drive against COVID-19 is in progress at a government school in Amritpur village, in Chandauli district, Uttar Pradesh state, India, Thursday, June 10, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

  • Vijayee Pratap Gupta, 60, a grocery shopkeeper and one of the few in the area to get vaccinated against COVID-19 stands outside his home in Jamsoti village, in Chandauli district, Uttar Pradesh state, India, on June 8, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

  • Munni Kol, 70, in white, with his son Bishambar Kol, daughters-in-law, Asha and Manju, and his grandchildren pose for a photograph in front of their home, in Jamsoti village, Uttar Pradesh state, India, on June 8, 2021. Kol got himself vaccinated against the coronavirus, where as his family has refused to. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

  • People take part in a meeting of the Village Monitoring Committee of Amritpur Village, in Chandauli district, Uttar Pradesh state, India, Thursday, June 10, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

  • Health workers arrive to test villagers for COVID-19 and to persuade them get vaccinated at Sikanderpur village, in Chandauli district, Uttar Pradesh state, India, Wednesday, June 9, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

  • Health workers Neeraj, third right, and Aradhna take nasal sample of a woman for COVID-19 test at Jamsoti Village, in Chandauli district, Uttar Pradesh state, India, on June 8, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

  • Ram Brij, center sits with his family who refused to get vaccinated against the coronavirus at Rampur village, Uttar Pradesh state, India, on June 9, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

  • Health workers persuade Indian villager Pana Lall, 60, center, to get vaccinated against the coronavirus at Sikanderpur village, Uttar Pradesh state, India, on June 9, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

  • District magistrate Sanjeev Singh, left, overlooks a health worker administering vaccine to a villager at Naugarh, in Chandauli district, Uttar Pradesh state, India, Thursday, June 10, 2021. India's vaccination efforts are being undermined by widespread hesitancy and fear of the jabs, fueled by misinformation and mistrust. That's especially true in rural India, where two-thirds of the country's nearly 1.4 billion people live. Credit: AP Photo/Rajesh Kumar Singh

"If they are protected, much of India will be protected," Reddy said of . "Their vulnerability to a sweeping pandemic is much, much more. So vaccinating them quickly must be a priority."

Not everyone is convinced.

When a team of health workers last week attempted to vaccinate Panna Lal, a resident of Sikanderpur village in Uttar Pradesh, they were met with an absolute refusal.

Lal even discouraged the rest of his family from getting the jab.

"The vaccine will not protect me," the 56-year-old told the workers. "God has sent me here safely, and he will continue to protect me."