A federal judge ruled in favor of Merck in litigation accusing it of concealing the risks of Gardasil, a vaccine to prevent cervical and other cancers caused by the human papillomavirus and one of the drugmaker's best-selling products.

A federal judge ruled in Merck & Co.’s favor in a safety lawsuit over its Gardasil vaccine, allowing the drugmaker to sidestep more than 200 cases claiming the company concealed safety risks.

A federal judge granted summary judgment in favor of Merck for part of the litigation involving the HPV vaccine, Gardasil. The rest of the case is still going on.

A federal judge has ruled in favor of Merck in litigation accusing the drugmaker of concealing the risks of Gardasil, a vaccine to prevent cervical and other fatal cancers. The decision made public on Tuesday by U.