The article “Universal' immunizations get a boost in India' (Nat. Med. 16, 497, 2010), described the Indian Drugs and Pharmaceuticals Limited as “the largest vaccine producer of its kind.” However, although the company is the country's largest public-sector producer of drugs and pharmaceuticals, it is not the largest vaccine producer. The text should have read “A 7.6 billion rupee ($170 million) revival package was, as Nature Medicine went to press, still awaiting a cabinet nod to perk up the almost 50-year-old, government-owned Indian Drugs and Pharmaceuticals Limited (IDPL), the country's largest public sector producer of drugs and pharmaceuticals.” The error has been corrected in the HTML and PDF versions of the article.