Instruct: Identify the main category of Medrxiv papers based on the titles
Query: Impact of the COVID-19 pandemic on routine immunization coverage in children under 2 years old in Ontario, Canada: A retrospective cohort study
67
The categories of this paper are: transplantation
0
The categories of this paper are: neurology
62
The categories of this paper are: orthopedics
35
The categories of this paper are: pediatrics
34
The categories of this paper are: therapy
1
The categories of this paper are: sports
33
The categories of this paper are: physical
46
The categories of this paper are: therapeutics
58
The categories of this paper are: hematology
41
The categories of this paper are: nephrology
23
The categories of this paper are: gastroenterology
28
The categories of this paper are: nutrition
73
The categories of this paper are: toxicology
52
The categories of this paper are: nursing
40
The categories of this paper are: geriatric
39
The categories of this paper are: rheumatology