A large upward trend was noticed in the incidence of varicella in children starting at 2.5 years, and a decreasing trend from year to year at the aged 6 years.
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Epidemiological Characteristics of Varicella under Different Immunisation Strategies in Suzhou Prefecture, Jiangsu Province.
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The sentences
The average annual incidence of varicella in China between 2016 and 2019 was 55.05 per 100,000 [ 7 ], which was an increasing trend compared with the average yearly incidence between 2005 and 2015 (23.04 per 100,000) [ 8 ].