The pharmaceutical industry has witnessed unprecedented problems in recent years. Safety issues and concerns related to certain drugs, compounded with competition from generic and non-generic drugs, have increased the cost of drugs, on average, by 24% in the U.S. over the past three years. This has resulted in prescription costs declining by 4% for privately insured patients between 2010 and 2013.The same worries exist in emerging markets such as Brazil, India and China. One possible solution is to develop a range of therapeutically effective vaccines.Antibiotics are crucial for treating bacterial infections and ensuring the long-term maintenance of healthy individuals and populations. However, drug resistant bacterial infections are posing a threat to public health around the world.