Fig. 2
From: Occurrence of canine parvovirus in dogs from Henan province of China in 2009–2014
Distribution of morbidity of CPV infection in relation to dog age. The incidence of morbidity at different ages was 83/836, 319/3154, 291/2584, 145/1765, 116/1516, 75/1224, 68/1916, 41/1610, 24/2210 and 7/3092, respectively. The morbidity was relatively high in the first 4 months with the highest recorded in month 3 (◆). After month 3, morbidity gradually decreased. However, as a whole, P-value was <0.05 for morbidity in relation to dog age. Statistical analysis was performed using the χ2 test