Researchers used data on almost 144,000 women between the years 2004 to 2011.

The study suggests this herd immunity is an even more effective prevention for elders than the vaccine currently recommended to prevent pneumonia in older adults.

Parkinson's disease is a progressive nervous system disorder that affects how the person speaks and writes, including how they move.

Most of the pharmaceutical companies claim that the strict manufacturing measures and implications of upgrading the drug production in between by the FDA are also responsible for amplification of the drug shortages.

All eyes are now on the clinical outcome of the two large studies as the vaccine has been found to be effective against 3 of the four strains of the dengue fever.