Jul 04 (NHK) - Japan's health ministry says lingering fever after coronavirus vaccinations could be a symptom of infection by the virus.
Fever, headache, and other reactions to inoculation are most likely to be present the day after getting a jab. A ministry research team says 2 percent of those who received a Pfizer vaccine and 4 percent of those who received a Moderna shot have developed fever 37.5 degrees Celsius or higher the day after their first shot.
The team says it is so hard to distinguish symptoms of COVID-19 from reactions to vaccination that some people with fever might not get tested for the coronavirus.
The ministry therefore urges people to see a doctor if their fever continues for two days or longer and they have other symptoms of COVID-19 such as coughs, shortness of breath, and lack of smell and taste.
The ministry is also urging medical institutions to test or refer to test labs when they examine people with lingering fever after inoculation.