Emory University research is heavily funded by the United States Department of Health and Human Servicess National Institutes of Health. The federal agency awarded the university nearly $300 million in the fiscal year of 2015. In 2015, Emory University was one of four institutions selected by the National Institute of Allergy and Infectious Diseases for its seven-year, multimillion-dollar Tuberculosis Research Units (TBRU) program, which aims to drive innovation in tuberculosis research and reduce the global burden of the disease. In 2015, an Emory-led research consortium received a five-year, 15 million dollar grant from the National Institutes of Health (NIH) to research human immune system to Varicella zoster virus and pneumococcal vaccination. The university also received a $9 million grant over five years from the NIH to support one of three national Centers for Collaborative Research in Fragile X syndrome. The grant is a renewal of Emorys National Fragile X Research Center, continuously funded by the NIH for more than 10 years. In 2015, the university received an $8.9 million grant over five years from the NIH National Heart, Lung and Blood Institute(NHLBI) to better understand the role of reactive oxygen species and inflammation in blood vessel function and to explore new interventions and preventive approaches for atherosclerosis and aortic aneurysms. In 2015, the university received a $8 million grant over five years from the NIH to develop and validate mathematical models of how prior immunity affects recall immune responses to influenza viruses. The researchers will create and disseminate powerful, user-friendly modeling tools for use by the wider research community in developing more effective vaccines. In 2015, the university received a $3.6 million grant over five years from the NIH to examine the effects of maternal stress on brain function, development, and behavior in African-American infants, including the biochemical connection between the brain and the microbiome. In 2015, the university received a $3.5 million grant over five years from the NIH National Cancer Institute (NCI) for an Informatics Technology for Cancer Research award. Winship Cancer Institute and Emory School of Medicine researchers will develop software tools to help the cancer research community gain new insights from cancer imaging "big data" and develop new open-source cancer research applications. In 2015, the university received a $3.4 million grant from the NIH International Collaborations in Infectious Disease Research Program to support a partnership between the Emory Vaccine Center and the International Centre for Genetic Engineering and Biotechnology (ICGEB) in New Delhi, India to study dengue virus infection in India.

Based on the above article, answer a question. How many millions of dollars was awarded by the largest individual grant mentioned?
15