Instruct: Identify the main category of Medrxiv papers based on the titles
Query: Elevated COVID-19 Case Rates of Government Employees, District of Columbia, 2020-22
58
The categories of this paper are: hematology
28
The categories of this paper are: nutrition
36
The categories of this paper are: economics
43
The categories of this paper are: environmental
56
The categories of this paper are: research
69
The categories of this paper are: palliative
13
The categories of this paper are: genetic
11
The categories of this paper are: policy
48
The categories of this paper are: critical
21
The categories of this paper are: psychology
6
The categories of this paper are: and
22
The categories of this paper are: clinical
40
The categories of this paper are: geriatric
47
The categories of this paper are: care
50
The categories of this paper are: medical
5
The categories of this paper are: health