First dose of COVID-19 vaccine Takeda/Moderna (English)

Hello, I’m Mamington, a working mom of three.

COVID-19 vaccination for <64 year-olds have officially started. I contemplated whether to receive the vaccine given the limited amount of testing done on prior to its roll-out, but I signed up because being vaccinated seemed to be the way to be able to do more with my children, particularly attending school and extracurricular events as a parent.

I have recorded my experience for anyone interested. I hope you find this useful.

• Subject person (myself, Mamington): Japanese, around 40 years old, body temperature 36.1, no chronic illnesses, not pregnant
• Vaccine type: Takeda/Moderna COVID-19 vaccine
• Place of vaccination: Vaccine center within the office building that I work in
• Vaccine methodology: 0.5mL intramuscular injection on the arm

Timeline of my vaccination and side effects:

6/21	14:00	Arrived at the vaccine center, check-in
	14:10	Vaccine injection, no major pain
	14:30	Stayed at the center for 15-20 mins to confirm no major changes in condition
	14:45	Slight headache but no issues with carrying on with the day
	15:00	Slight fatigue in addition to the headache, but still no impact with getting through the day
	23:00	Headache settled down but started feeling shivers
	0:45	Went to bed with the shivers
6/22	6:30	Woke up, normal temperature, shivers are gone but felt muscle pain in my arm
	15:00	24+ hours passed since the injection, arm pain worsened and felt very fatigue
	17:00	Arm pain continued to worsen, felt like a mild cold, temperature lower than average @ 35.9
	23:00	Arm pain is starting to settle down but the entire body feels heavy and fatigued, went to bed

So the day after the vaccine injection wasn’t pleasant. I felt fatigue throughout the day and was not very effective at work (thankfully I was working from home today so I could rest from time to time). I was hearing that arm pain is a common side effect of the first dose, but I wasn’t aware that we could experience severe fatigue even without any temperature. Side effects really do differ for each individual. I sure hope I feel better tomorrow, and I really hope that the second dose is not so severe on me…

To be continued…

P.S. As of 6/23 (2 days after the injection), the pain in my arms and fatigue have gone away. I am feeling fine overall.