Foreign-born immigrants account for more than half of new tuberculosis cases in the U.S. in recent years, according to a study in a major medical journal.

Researchers suggest that immigrants to the U.S. from Africa and Southeast Asia should be tested and treated for tuberculosis before they arrive to prevent importing the disease

Health inspectors will on Saturday begin issuing citations and fines to New York City fast-food chain restaurants that fail to post calorie counts next to the prices on their menus.

The new rule, allowing a two-month grace period, took effect in May. It marks the first time a U.S. city has launched an anti-obesity campaign. It requires restaurants that have 15 or more nationwide outlets to post calorie information beside their prices

A new drug could potentially save the lives of thousands of prostate cancer sufferers, new studies have shown, while eliminating the need for damaging chemotherapy and radiotherapy.

The drug, abiraterone, works by blocking the hormones which fuel the cancer and a human trial has shown that it can shrink tumors in up to 80 percent of cases. The technique could also be effective on other tumors, such as breast and bowel cancers, Britain's Daily Mail reported

Researchers have developed a tobacco plant-based vaccine for patients with a chronic form of lymphoma, a specific type of cancer.

According to the first human study of the approach, researchers found that the vaccine could trigger an immune response in the body, which could lead to personalized vaccines that may kick start the patients' immune systems to attack the cancer

The World Health Organization (WHO) on Monday warned of a multi-drug resistant tuberculosis or MDR-TB. It said that a majority of the world's population are vulnerable to the new strain.

The Manila, Philippines-based WHO told reporters that MDR-TB can cross borders and that an "uncontrolled local epidemic" can threaten the stability of health security across the globe