New Zealand has received an "eco-terrorist" threat to poison baby formula, Prime Minister John Key said Tuesday, in a scare that risks further denting the country's "clean, green" reputation.

Police said they were taking the issue seriously after small packages of baby formula containing poison were sent with anonymous letters to the National Farmers Federation and dairy giant Fonterra.

Unhealthy eating, smoking and obesity are threatening a heart disease epidemic in China, where three out of four people are in poor cardiovascular shape, said a study on Monday.

The findings published in the Journal of the American College of Cardiology are based on data from 96,000 men and women in the general Chinese population.

Real-time imaging in lab monkeys has pointed to the havens where HIV lurks after being beaten back by drugs, scientists said on Monday.

The achievement may provide a powerful weapon in the quest for an AIDS cure, they hope.

China has banned the harvesting of transplant organs from executed prisoners, a senior official said, but international medical practitioners warn that inmates' body parts may simply be reclassified as "donations" instead.

High demand for organs in China and a chronic shortage of donations mean that death row inmates have been a key source for years, generating heated controversy.

Marking the progress in controlling its Ebola outbreak, the Liberian government dismantled a crematorium and removed drums containing the ashes of more than 3,000 Ebola victims cremated during the height of the epidemic, whose last patient was discharged last week.

Liberia resorted to cremating the bodies of Ebola victims when communities rejected burials in their areas for fear the disease could spread and contaminate their soil and affect them. The cremations were very controversial because they were against traditional burial practices. But those customs, including washing and touching the dead, spread the deadly Ebola which brought the government to impose cremations.

Sierra Leone's top sprinter is sleeping rough in London because he was afraid to return to his Ebola-hit homeland after last year's Commonwealth Games in Scotland, the Guardian newspaper reported Saturday.

Jimmy Thoronka, 20, went missing after July's event in Glasgow but has now been tracked down in an emaciated state sleeping on buses and in parks in the British capital.

Singapore has banned a music festival scheduled to take place later this month over concerns of drug use after multiple deaths at last year's event in Malaysia.

Singapore, which has one of the world's toughest anti-drug regimes, late Friday denied a last ditch appeal by organizers of the Future Music Festival Asia (FMFA) for a public entertainment license, following two earlier failed applications.

Cases of dengue fever are on the rise in Sao Paulo, with a nearly eightfold increase that saw 24 people die in Brazil's most populous state so far this year, the health ministry said Friday.

The mosquito-borne infectious tropical disease comes as Sao Paulo state and the southeast of the country suffer water shortages in the wake of the worst, months-long drought in living memory.

The MERS virus has killed 10 more people in Saudi Arabia over the past week, pushing the death toll above 400, as health officials broaden their campaign to halt its spread.

Saudi Arabia is the country worst-hit by Middle East Respiratory Syndrome coronavirus (MERS-CoV).

In an encouraging development for consumers worried about antibiotics in their milk, a new Food and Drug Administration study showed little evidence of drug contamination after surveying almost 2,000 dairy farms.

In response to concerns, the agency in 2012 took samples of raw milk from the farms and tested them for 31 drugs, almost all of them antibiotics. Results released by the agency Thursday show that less than 1 percent of the total samples showed illegal drug residue.