Instruct: Identify the main category of Medrxiv papers based on the titles
Query: Incidence of COVID-19 reinfection among Midwestern healthcare employees
70
The categories of this paper are: otolaryngology
22
The categories of this paper are: clinical
15
The categories of this paper are: allergy
65
The categories of this paper are: oral
34
The categories of this paper are: therapy
41
The categories of this paper are: nephrology
53
The categories of this paper are: pathology
48
The categories of this paper are: critical
5
The categories of this paper are: health
43
The categories of this paper are: environmental
35
The categories of this paper are: pediatrics
17
The categories of this paper are: informatics
38
The categories of this paper are: hiv
24
The categories of this paper are: oncology
31
The categories of this paper are: imaging
14
The categories of this paper are: cardiovascular