Fig. 5 | npj Vaccines

Fig. 5

From: Newcastle disease virus-based H5 influenza vaccine protects chickens from lethal challenge with a highly pathogenic H5N2 avian influenza virus

Fig. 5

Clinical scores, survival rate and virus shedding of spray vaccinated and mock-vaccinated chickens after challenge. a Clinical scores were given in each group of chickens based on the clinical symptoms. The scores range from 0 to 3. (0: no clinical sign; 1: mild clinical signs; 2: severe clinical signs; 3: dead). All mock-vaccinated chickens and only 2 vaccinated birds showed clinical symptoms. b Survival rates of mock-vaccinated and vaccinated chickens were calculated daily. Eighteen NDV-H5 vaccinated chickens survived and none of mock-vaccinated chickens survived from the challenge. c Viral titers in oropharyngeal and cloacal swabs collected from vaccinated and mock-vaccinated chickens at 1 and 3 days post challenge

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