Table 1 Overall study vaccine-related adverse events up to 50 days after the first vaccination.

From: Phase II prefusion non-stabilised Covid-19 mRNA vaccine randomised study

Adverse event, N (%)

ChulaCov19, (N = 120) up to 50 days

Placebo, (N = 30) up to 29 days

Comirnaty (post-Placebo), (N = 30) up to 50 days

Overall adverse events

119 (99.2%)

26 (86.7%)

30 (100%)

 Grade 3

16 (13.3%)

1 (3.3%)

0 (0.0)

 Grade 4

0 (0.0)

0 (0.0)

0 (0.0)

Solicited adverse events

 All

118 (98.3%)

18 (60.0%)

30 (100%)

 Grade 3

14 (11.7%)

1 (3.3%)

0 (0.0)

 Grade 4

0 (0.0)

0 (0.0)

0 (0.0)

Unsolicited adverse events

 All

55 (45.8%)

11 (36.7%)

1 (3.3%)

 Grade 3

2 (1.7%)

0 (0.0)

0 (0.0)

 Grade 4

0 (0.0)

0 (0.0)

0 (0.0)

Serious adverse event

0 (0.0)

0 (0.0)

0 (0.0)