Trial offers hope for millions that jab could prevent rheumatoid arthritis

An existing drug for the chronic disease could slow or stop its progression, researchers say

Scientists have discovered a jab that could prevent rheumatoid arthritis (RA), a development experts say could offer hope to millions at risk of the disease.

RA is a chronic disease that causes inflammation in the body and triggers pain in the joints. About 18 million people globally are affected by the condition, which can lead to heart, lung or nervous system problems, according to the World Health Organization.