In the United States, most children are vaccinated against hepatitis A at just one years of age. In addition, the number of cases of hepatitis A were quite low, so there was no need to stockpile huge amounts of hepatitis A vaccine. This is why there is now a shortage of this vaccine. The outbreak of hepatitis A that is plaguing the United States currently is of the genotype IB. This genotype is usually found in the eastern part of the world, such as South Africa, Turkey and the Mediterranean. As of now, there are only two pharmaceutical companies that are allowed to sell adult vaccines of hepatitis A: Merck and GlaxoSmithKline. Due to the rise of hepatitis A outbreak, Merck is now trying to upscale the amount of vaccines they produce and GlaxoSmithKline is now working with the CDC and other public health officials to help with making sure the vaccines reach the desired populations so that this outbreak can finally be controlled.
Eyasu Kebede
Source: http://www.cnn.com/2017/11/15/health/hepatitis-a-outbreak-vaccine-shortage/index.html
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