Table 2.

Temporal variation of overall IgG and IgM antibody positive responses in patient sera

Days after positive RT-qPCR	Total number of sera tested	No. of sera with IgM antibodies	No. of sera with IgG antibodies	No. of sera with either IgM and/or IgG antibodies
0–10	6	5	3	6
11–20	12	8	11	11
21–30	22	12	18	20
31–40	18	6	15	15
41–50	9	2	7	7
51–65	8	3	8	8
100–154	9	0	4	4