Kubu Simbelang, Indonesia ? The three brick-and-clapboard houses stand along the village’s muddy dirt road, empty and forlorn. A naked light bulb hangs from a wire over one door, still burning. A white pet bird cries for food from its cage.

But no one dares to go near.

Health experts have focused on the houses since an extended family started dying from bird flu and no links to sick birds could be established. They suspect limited human-to-human transmission, but say there is no need to panic because no one else in this mountain farming village has fallen ill and the virus has not mutated.

Some neighbors insist, however, that bird flu is not to blame. They are convinced black magic is at work, that ghosts now haunt their quiet Christian community of about 1,500 people.

Many are too scared to even pass by the family’s houses, and some who live nearby are awakened by nightmares that they will be the next to die.

“We are so afraid just to step into that house,” said a 37-year-old woman who identified herself only as Sembining. “We can’t tell what we’re afraid of – we’re just afraid.”

Villagers go about their farm work in Kubu Simbelang, North Sumatra, Indonesia. An outbreak of bird flu in the village has raised more fears of black magic than medical concern.

This is the largest cluster in a handful of cases involving bird flu passing from human to human, but scientists think it has always done so between blood relatives – not spouses. That has led some to theorize there may be a genetic susceptibility to the disease, but there is no evidence yet to support that.

Tests found no trace of the H5N1 virus in the village’s poultry, and dozens of hens, roosters and chicks run freely in backyards. Pigs, cows, dogs and barefoot children roam along the rutted road and across fields of chilies, oranges and limes.

Whatever the source of the infection, six of seven family members who tested positive for H5N1 have died. An eighth was buried before samples could be taken, but the World Health Organization considers her part of the cluster.

As their neighbors started dying, confusion and mistrust prompted villagers to stop cooperating with officials. Many refused to give blood samples, fearing they would later fall ill and suffer the fate of their neighbors.

The case has been a powerful lesson for WHO officials in understanding the importance of early communication and education. “We’re seeing what problems we’re going to run into on the ground,” WHO spokesman Dick Thompson said. “We’re learning with every step.”