A California-based company is voluntarily recalling certain bags of its fresh spinach after the product tested positive for salmonella during the company's routine testing on Wednesday.

So far, no reports of illnesses related to the tainted spinach distributed by Metz Fresh LLC of King City, California are found but the company is recalling the product as precautionary measure

Researchers from Japan have achieved a breakthrough in the field of vaccines by developing a type of rice that can carry a vaccine for cholera. The new discovery is seen as a revolutionary way to ease delivery of vaccines in developing countries, where storage is difficult due to lack of refrigeration.

The new rice vaccine, which is tested only in mice, causes immune reactions both systemwide in the body and in mucosal tissues such as in the mouth, nose and genital tract. Standard vaccines delivered by needle do not cause immune responses in the mucosal areas

yson Fresh Meats Inc. is recalling more than 40,000 pounds of ground beef that was shipped to Wal-Mart stores in 12 states. Tests showed some of the meat may contain E. coli contamination.

Wal-Mart has taken the meat off the shelves. It is also destroying the meat that it has. The beef was sent to stores in Texas, Tennessee, Oklahoma, Kansas, Colorado, Arkansas, Louisiana, Alabama, Kentucky, Mississippi, Missouri and New Mexico

Tyson Fresh Meats Inc. has announced a recall of more than 40,000 pounds of ground beef that were distributed to Wal-Mart stores in Alabama, Arkansas, Colorado, Kansas, Kentucky, Louisiana, Mississippi, Missouri, New Mexico, Oklahoma, Tennessee and Texas. No illnesses related to the E. coli contaminated meat have been reported.

The samples tested by the company at the Sherman, Texas, plant had been positive for E. coli contamination

This beach season, health officials are not just warning against harmful UV rays, they are also raising red flags for E. coli in the sand.

E. coli is one of the main species of bacteria living in the lower intestines of mammals. The bacteria are generally an indicator of fecal matter contamination and can cause extreme sickness in humans and other animals when ingested