Suspended recovery in many places. Within half a year, blood donation
experts for
patients infected with the new crown virus
believe that although there is no evidence that the new crown can be transmitted through blood, due to the health of the blood transfusion recipients, the blood donation interval has been extended.
Recently, the General Office of the National Health Commission and the Health Bureau of the Logistics Support Department of the Central Military Commission issued the "Notice on Printing and Distributing the Guidelines for the Prevention and Control of New Coronary Pneumonia Epidemics in Blood Stations in Autumn and Winter", which mentioned that within 6 months after being cured and discharged from the hospital Temporarily refuse to donate blood.
In addition, blood donors also need to take body temperature measurement. If the blood donor has a body temperature of ≥37.3℃, the staff should inform the blood donor to suspend blood donation, arrange for him to leave the consultation site, and remind the blood donor to go to the designated fever clinic in time.
According to the Beijing News, if you have been infected with the new crown virus, you may not be able to donate blood temporarily.
Yesterday, a reporter from the Beijing News learned from many places that according to the latest blood donation regulations, patients with new crown infection who have recovered from the hospital for less than 6 months will be temporarily refused blood donations.
The plasma of recovered patients, which was widely collected from the society in February, is temporarily suspended.
Blood station epidemic prevention guidelines released
“If you have been infected with the new crown, you will be cured and discharged within six months, and you cannot donate whole blood temporarily.” A staff member of a blood station in Guangzhou told reporters yesterday afternoon.
Subsequently, the reporter called the blood donation hotlines of Beijing Blood Center, Shanghai Blood Center, and Wuhan Blood Center, all of which received the same feedback.
Some staff members said that the screening of blood donors at the blood station is based on the documents just issued.
Recently, the General Office of the National Health Commission and the Health Bureau of the Logistics Support Department of the Central Military Commission issued the "Notice on Printing and Distributing Guidelines for the Prevention and Control of New Coronary Pneumonia Epidemics in Blood Stations in Autumn and Winter", including the infection of the new crown virus in the health consultation.
It mentioned that on the basis of the original health consultation, the "New Coronary Pneumonia-related Health Status Inquiry Form" was added to understand the health status of blood donors related to new coronary pneumonia, and to screen whether the blood donor has travel history, contact history or life history in key areas.
For those who have been diagnosed with new coronavirus infection, they temporarily refuse to donate blood within 6 months after being cured and discharged.
Blood donors need to take their temperature
In addition to clear infection, people with other related symptoms are also advised to suspend blood donation: I have fever or respiratory symptoms; have been in close contact with people or patients with fever or respiratory symptoms; have been in contact with people infected with the new coronavirus, or people with clusters of disease Or epidemiological association history; recent residence history abroad or in high-risk areas; previous influenza or new coronavirus vaccination.
The suspension period is at least 28 days after the end of the relevant situation.
Blood donors also need to take body temperature measurement. If the blood donor has a body temperature of ≥37.3℃, the staff should inform the blood donor to suspend blood donation, arrange for him to leave the consultation site, and remind the blood donor to go to the designated fever clinic for medical treatment in time.
Industry experts believe that although there is no evidence that the new crown can be transmitted through blood, the interval between blood donations for recovered patients has been extended due to the health of blood transfusion recipients.
Guidelines for Prevention and Control of Epidemics in Blood Stations in Autumn and Winter (Abstract)
Consultation before blood donation
On the basis of the original health consultation, the "New Coronary Pneumonia-Related Health Conditions Inquiry Form" is added. If the blood donor has any of the following conditions, it is recommended to postpone blood donation, and the postponement time is at least 28 days after the end of the relevant conditions:
●I have fever or respiratory symptoms
●Have close contact with persons or patients with fever or respiratory symptoms
●Have a history of contact or epidemiological association with people infected with the new coronavirus or clusters of disease
●Recent living history abroad or in high-risk areas
●Have been vaccinated against influenza or new coronavirus
Blood Donor Reply
The blood station shall inform the blood donor in writing. If symptoms related to the new crown virus infection appear after blood donation, the blood station shall be reported to the blood station in time. The blood donor shall be notified in advance of the relevant matters, and the blood donor shall be asked to sign and confirm the informed consent.
If blood donors report that they have suspected symptoms of new coronary pneumonia or are required to be isolated, the following measures should be taken:
●Isolate unspoken blood
●Blood sent to the clinic but not infused, isolated after emergency recovery
●Blood is sent to the clinic and has been infused, and the relevant information should be registered, and the relevant hospitals should be notified in time and reported to the local health administration department
●Check the staff who have close contact with the blood donor and arrange isolation. If the blood donor is confirmed not to be infected, the isolation will be lifted
●Maintain communication with blood donors and obtain confirmation information in a timely manner. If it is confirmed that the new coronavirus infection is excluded, the blood can be released
Blood donors infected with the new coronavirus should take the following measures
●Confidential disposal of unsent blood
●Blood sent to the clinic but not transfused, treated with confidential blood discarded after emergency recovery
●Blood has been sent to the clinic and has been transfused, relevant information should be registered, relevant hospitals should be notified in time, follow-up visits of blood recipients, and report to the local health administration department
●Check the staff who have close contact with the blood donor and arrange for 14 days of isolation and observation
Blood collection and supply process
Blood collection
Blood donation places should provide blood donors and accompanying persons with medical masks and guide them to wear them correctly; make appointments for blood donation as much as possible, control the number of blood donations at the same time, and group blood donation to minimize the number of accompanying persons
Ingredient preparation
The blood components should be prepared in a closed system as much as possible, and the sterile connection process should be regarded as a closed system operation; in areas with high risk of community transmission, the preparation of blood components that may have potential biological contamination should be performed in a biological safety cabinet. Emergency disinfection treatment after blood leakage
Storage, transportation and supply
Set up an independent blood storage area to store and manage the blood donated by suspicious blood donors who return to visit and the blood that is positive by the testing department; strengthen the disinfection of blood delivery vehicles and blood transport boxes (to the hospital); take blood Personnel entering the blood collection area must have a blood collection slip and a sterilized blood collection box, and perform temperature testing; strengthen inventory management
Follow-up 1
Why temporarily refuse to donate blood to people recovering from COVID-19?
Safety considerations for blood donors and blood recipients
The "Notice" mentioned that the guidelines were issued to implement the requirements for normalized epidemic prevention and control, to ensure the safe supply of blood, and to ensure the safety of blood station staff and unpaid blood donors.
A clinician who had treated patients with new coronary pneumonia in Wuhan told reporters that the new coronavirus has been detected in human urine and blood.
In mid-October this year, the international medical journal "Blood" published an article mentioning that viremia does exist in severely ill patients with new coronary disease, and it was not found in asymptomatic infections.
Based on the hypothesis that viremia may lead to the transmission of blood transfusion, the risk of transmission of new coronary blood transfusion cannot be completely ruled out.
However, the article also mentioned that viremia in asymptomatic blood donors is very rare, and the level of viral RNA detected is very low.
Although there are viral nucleic acids in the blood, it is not a natural pollution mode and does not necessarily mean a threat to blood safety.
"There is no definite evidence as to whether the new crown can be transmitted by blood. However, in line with the safety of blood donors and blood recipients, the donation of blood will be temporarily suspended for those who have been diagnosed recently." An expert engaged in blood research at the blood center analysis.
According to the staff of Panyu Blood Station in Guangzhou, daily blood donation also requires that blood donors be healthy. If they suffer from other diseases, they will require a certain amount of recovery time.
For patients with cold symptoms, blood donation can only be carried out a week after they have recovered and stopped taking the medicine, and those with tattoos and eyebrows can only donate blood after one year.
"Different diseases are different. For example, if you have a cold, there will be viruses and bacteria in your body, and white blood cells will rise. After taking the drug, the absorption compensation reaction may also affect blood quality."
Follow-up 2
Can the recovered plasma can be donated?
Plasma collection during the recovery period has been suspended
In February of this year, plasma therapy entered the public eye. Many experts called on survivors of new coronary pneumonia to donate plasma. Immediately, a biopharmaceutical company collected plasma from the survivors from the society, and the hotline was blown up.
The principle of plasma therapy is to use the new coronavirus antibodies still in the plasma to help patients clean up the virus from the body.
The "Diagnosis and Treatment Plan for Pneumonia of New Coronavirus Infection" has been written in plasma therapy, and it is recommended for patients with rapid disease progression, severe and critically ill patients.
The reporter learned that during the newly-occurring epidemic in Beijing in June this year, patients with COVID-19 used the plasma of recovered patients from Wuhan, and some patients donated plasma after 1-2 months of recovery.
The blood donation of recovered patients has been suspended. Will plasma donation be affected?
According to the above-mentioned blood research experts, routine blood donation for ordinary people and convalescent plasma collected as a treatment are two concepts.
The staff of Beijing, Shanghai, and Wuhan blood stations said that plasma donation during the recovery period is a work initiated during a special period, which is different from daily blood donation.
The current number of severely ill patients is small, and plasma collection during the recovery period has been suspended.
Follow-up 3
How to deal with the blood collected from an infected person?
Blood donors must report back to the blood station if they develop symptoms
The "Guidelines" provide for such situations.
If the blood donor reports back to confirm the infection of the new coronavirus, the blood that has not been sent will be treated confidentially; the blood sent to the clinic but not infused, it will be treated confidentially after emergency recovery; the blood sent to the clinic and has been infused, Do a good job of registering relevant information, notify relevant hospitals in time, follow up blood recipients, and report to the local health administration department; staff who have close contact with the blood donor are arranged for 14 days of isolation and observation.
If blood donors report that they have suspected symptoms of new coronary pneumonia or are required to be isolated, they should isolate the blood that has not been sent; if the blood is sent to the clinic but not infused, it should be recovered and isolated immediately; the blood sent to the clinic and has been infused, do the relevant Information registration, promptly notify relevant hospitals and report to the local health administration department; staff who have close contact with blood donors are arranged for isolation.
If it is confirmed that the new crown virus infection is excluded, the blood can be released and the staff will be released from isolation.
In addition, before blood donation, the blood station should inform the blood donor in writing, if symptoms related to the new coronavirus infection appear after blood donation, they must promptly report back to the blood station.
The blood station shall have a special department responsible for accepting the replies from blood donors. After receiving the replies, it shall make records and deal with them in a timely manner.
Beijing News reporter Dai Xuan