Why is the second dose of COVID-19 vaccine suspended? How many days can the second dose of COVID-19 vaccine be vaccinated

In recent days, we have heard that the second dose of COVID-19 vaccine will be suspended, which makes us very concerned about this matter. Why is the second dose of COVID-19 vaccine suspended? If only one dose is available, how many days after the second dose of COVID-19 vaccine can be vaccinated? Then we will follow the editor to learn about the suspension of the second dose of COVID-19 vaccine

1. Suspension of the second dose of COVID-19 vaccine?

At present, only Haikou has suspended the second dose of COVID-19 vaccine, which is mainly due to the tight supply of vaccine. No information has been released in other regions, so it is normal vaccination.

Notice of suspension of the second dose of COVID-19 vaccine in Haikou:

(1) In view of the limited carrying capacity of vaccination clinics in COVID-19 and the tight supply of Xinguan vaccine, in order to improve the coverage of the first dose of vaccine in Haikou as soon as possible, except for the staff directly involved in the service guarantee of Boao Forum for Asia and China International Consumer Goods Expo, Haikou will not carry out the second dose of COVID-19 vaccine for other people;

(2) Haikou will start the second injection of COVID-19 vaccine in mid to late April. Citizens who have reached the time interval and need to receive the second injection should pay attention to mobile phone calls and SMS notifications, and individuals do not need to make an appointment online;

(3) Citizens who have not been vaccinated with COVID-19 vaccine continue to go to each vaccination clinic to receive the first dose of COVID-19 vaccine.

2. Is J&J COVID-19 vaccination stopped? Johnson&Johnson confirmed in its response to the media that the study has been suspended, citing "unexplained symptoms in one participant" and refusing to provide further information. The company statement reads: "We must respect the personal privacy of participants. We are now also learning about their symptoms, and before sharing more information, we need to clarify all facts."

However, Johnson&Johnson also emphasizes that symptoms, accidents, and other medical issues may occur in clinical studies. At the same time, the company reiterates that the current suspension is not equivalent to a large-scale formal suspension, so it has not been informed to the public. According to American media, although clinical research pauses are not uncommon, vaccine research during the pandemic has received significantly higher attention. Moreover, Johnson&Johnson's research has reached a scale of 60000 people, and a source familiar with the study stated that even if the issue is resolved, new situations may arise at this scale.

How many days after the second injection of COVID-19 vaccine

14-28 days.

Although it is said that COVID-19 vaccine is an inactivated vaccine with high safety, because the time from vaccine development to clinical application is very urgent and has not gone through comprehensive clinical trials, if continuous vaccination, some people may have adverse reactions, so in order to reduce the occurrence of adverse reactions of COVID-19 vaccine, the interval between two injections should be at least 14-28 days.

Difference between one shot and two shots of COVID-19 vaccine

Difference in body protection.

Generally speaking, a single shot of COVID-19 vaccine can also play an antibody role, but the antibody positive rate in the body can only reach about 60-90%, which is less protective for the body. However, two shots can make the antibody positive rate in the body reach more than 90%, which will play a stronger protective role for the body. However, it should be noted that vaccines cannot achieve a 100% protective effect, and some individuals may not even form antibodies after vaccination and may still be infected. Therefore, even if vaccinated, personal protection is still necessary.