In Indonesia’s easternmost province, felled trees are stacked to block a road that leads to Papuan villages. On the Thai-Myanmar border, the Karen people have also made makeshift barricades and marked them with signs warning visitors away.

Across the globe, the coronavirus pandemic has left indigenous peoples at particular risk because so many have poorer health and less access to health care than their non-indigenous peers.

While there are, of course, vast differences among indigenous groups, including lifestyle and socioeconomic factors, the United Nations estimates that the life expectancy of indigenous people can be up to 20 years lower than that of their counterparts. A recommendation from the Australian government underscored the disparities. A message sent in March warned: “People over aged 70, ages over 60 with preexisting conditions, or Indigenous people aged over 50 should stay home whenever possible for their own protection.

The more stringent recommendation for indigenous people is likely because so many have the kinds of health problems that experts say can result in more serious consequences if they contract the coronavirus.

According to U.N. data, more than half of indigenous adults over 35 worldwide have Type 2 diabetes. Indigenous people also experience “disproportionately high levels” of cardiovascular disease, HIV/AIDS and illnesses such as tuberculosis.

For most people, the virus causes mild or moderate symptoms. But for some, especially those with health problems and older people, it can cause more severe illness and lead to death.

Genetics may play a part in poorer health among indigenous people, Mason Durie, a professor of M?ori Studies at Massey University who is himself M?ori, but social factors are generally considered more important.

Aware of the added risks, many indigenous people especially those living near or in urban centers are seeking isolation, said Rudolph Rÿser, an indigenous activist and executive director of the Center for World Indigenous Studies.

“Many people that are able to are simply running back into the forest, running back up the mountain, trying to get away from the urban settings to get away from potential vectors, he said. “They simply closed down, put up obstacles, and block the roads going into their territories.

That has raised the possibility that members who don’t typically live in traditional villages could bring the disease back with them. And some communities, like aboriginal ones in Australia, may be ill equipped to keep people safe because of poor infrastructure and crowding in homes, said Dr. Mark Wenitong, an aboriginal general practitioner and adviser to aboriginal health councils in Australia.

Some indigenous communities are practicing social distancing that closely resembles what’s happening outside them. In Indonesia, groups including Papuans and the Buntao’ in South Sulawesi province are blocking access to their villages. Elsewhere, others, like the Karen people, are also adding in traditional practices, such as performing rituals to remove bad luck or marking village entrances with culturally significant symbols.

The Associated Press