Around 91 people in nine States are reportedly infected as part of the recent meningitis outbreak, said the Centers for Disease Control and Prevention (CDC). The agency said that 7 people have been reported dead due to the infection.

The CDC said that there is not enough evidence to locate the source of the outbreak. However, there is strong link that the outbreak occurred from an "injectable steroid medication."

According to reports, the infections occurred due to the steroid injections (methylprednisolone acetate) made by The New England Compounding Center (NECC). On Saturday, NECC voluntarily recalled all its products.

"This action is being taken out of an abundance of caution due to the potential risk of contamination, and in cooperation with an investigation being conducted by the U.S. Food and Drug Administration, the Centers for Disease Control and Prevention and the Massachusetts Board of Registration in Pharmacy," said a news release from The New England Compounding Center.

The list of recalled products now includes acetaminophen suppositories, nipple ointments, morphine, vancomycin and vitamin K. According to the CDC, California, Connecticut, Florida, Georgia, Idaho, Illinois, Indiana, Maryland, Michigan, Minnesota, North Carolina, New Hampshire, New Jersey, Nevada, New York, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, Texas and West Virginia have received the possibly contaminated medication.

Meningitis is an "inflammation of the protective membranes covering the brain and spinal cord known as the meninges." CDC says that meningitis is often caused by bacteria or virus and a fungal infection is rather rare. 

The agency says that pregnant women receiving epidurals at childbirth need not worry because the epidurals given to them are different from the epidurals linked with the meningitis outbreak. Meningitis infection causes headache, fever, nausea, and stiffness of the neck, confusion, dizziness, and discomfort from bright lights, CDC said.