Obese people who lose just five percent of their body weight may see big benefits when it comes to their health, said a U.S. study out Monday.

Forty obese men and women were randomly assigned to either lose weight on a calorie-restricted diet, or to maintain their current weight.

Cambodia health officials on Monday were screening hundreds of villagers for HIV after 14 locals tested positive for the virus, sparking fears of a fresh outbreak.

Nervous villagers from Peam, an hour north of the capital Phnom Penh, have flocked to a house where a team of health officials were taking blood samples.

A woman with a confirmed case of the Zika virus in the southern state of Chiapas gave birth to a "clinically healthy" baby boy, Mexico's health ministry said.

The woman, from the town of Pijijiapan, delivered the six pound (2.8 kilo) boy in a hospital in the city of Tuxtla Gutierrez on Friday.

A Bangladeshi father dubbed "Tree Man" for massive bark-like warts on his hands and feet on Saturday underwent a successful operation to remove some of the growths, a hospital said.

A nine-doctor team took three and a half hours to remove the giant warts from Abul Bajandar's right hand at the Dhaka Medical College Hospital, facility director Samanta Lal Sen told AFP.

The atmosphere inside the laboratory on the outskirts of Vienna is literally buzzing with armies of male mosquitoes locked up inside net-covered boxes. Their sole mission in life: stop females from breeding. 

Better known for keeping a close watch on countries' nuclear activities, the International Atomic Energy Agency (IAEA) has joined the fight against Aedes aegypti -- the notorious mosquito responsible for spreading dengue, chikungunya and now the Zika virus.

More than 250 people have died of swine flu in Ukraine since late September, a health official said Thursday, with the toll rising by almost 70 people in the past two weeks.

The war-scarred country has been swept by a general flu epidemic that has claimed 313 lives since September 28, when the first illness was recorded, a spokeswoman at Ukraine's flu and acute respiratory infections center told AFP.

A Swedish court on Wednesday overturned an earlier judicial decision banning the sale of e-cigarettes.

The Supreme Administrative Court ruled that e-cigarettes are not medical products, and therefore the National Drug Agency could not oppose its sale.

The World Health Organization on Wednesday released its initial response plan to the Zika virus outbreak, launching a funding appeal for the $56 million (50 million euros) operation. 

The unprecedented outbreak of the virus, first discovered in Uganda in 1947, has become a global concern, with Zika now strongly suspected of causing two serious neurological disorders, microcephaly and Guillain-Barre syndrome. 

Women who ate more than the recommended three servings of fish per week while pregnant gave birth to children at a higher risk of obesity than expectant moms who ate less, a study said Monday.

The study in the Journal of the American Medical Association (JAMA) Pediatrics found an association between higher fish intake and the likelihood of rapid growth and obesity in offspring, but researchers cautioned that they had not proven any cause and effect.

Organic milk and meat contain about 50 percent more beneficial omega-3 fatty acids than conventionally produced equivalents, according to a pair of large-scale studies published Tuesday.

Previous research has linked omega-3 with reduced rates of cardiovascular disease, improved neurological development, and better immune function.