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Vaccines
Research on vaccines described by scientists at United States Department of Agriculture, Department of Agriculture
August 20th, 2008
New research, 'Clustering of mutations within the inverted repeat regions of a serially passaged attenuated gallid herpesvirus type 2 strain,' is the subject of a report. "Marek's disease (MD) is the leading cause of losses in chicken production in the world. Over the past 40 years significant progress has been made in the control of MD through the use of vaccines which reduce or delay tumor formation in vaccinated flocks," researchers in the United States report. "However, these vaccines fail to induce an immune response that protects against infection and virus shedding. Little is known about the genetic changes that lead to attenuation and are necessary for the...
Source: Vaccine Weekly (2008-08-20)
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