Table 2.

Adverse reaction after COVID-19 vaccine administration among health care professionals in Addis Ababa, Ethiopia.

No	Adverse reactions following COVID-19	Frequency
1.	Did you experience any adverse reactions?
	Yes	142 (51.3%)
	No	135 (48.7%)
2.	Adverse reactions experienced after vaccine administration
	Injection site pain	151 (54.5%)
	Headache	114 (41.2%)
	Fever	104 (37.5%)
	Fatigability and tiredness	94 (33.9%),
	Chills	92 (33.2%)
	Muscle pain	79 (28.5%)
	Decreased sleep quality	34 (12.3%)
	Nausea and vomiting	24 (8.7%)
	Irritation and skin reaction	19 (6.9%)
	Body sweating	12 (4.3%)
	Runny nose	25 (9%)
	Dyspnea	8 (2.9%)
	Chest pain	14 (5.1%)
	Sore throat	21 (7.6%)
	Cough	28 (10.1%)
3.	How soon the symptoms appeared after injection with a COVID-19 vaccine
	Up to 4 h	17 (6.1%)
	5–8 h	70 (25.3%)
	9–12 h	41 (14.8%)
	After 24 h	14 (5.1%)
4.	How long the symptoms lasted
	Less than 1 day	29 (10.5%)
	1–3 days	79 (28.5%)
	4–7 days	34 (12.3%)
	More than 7 days	0
5.	Have you been diagnosed with any types of thrombosis (blood clots)?
	Yes	2 (1.4%)
	No	140 (98.6%)
6.	Would you recommend the vaccine that you received to others?
	Yes	245 (88.4%)
	No	32 (11.6%)