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Nano Covax safe, but data for 'direct evaluation' of protection efficacy not available: Ethics council

HÀ NỘI — The National Ethics Co妹妹ittee in Biomedical Research (under the health ministry) on Sunday issued a press statement on its conclusions of Saturday's meeting looking into the mid-term phase  三 trial’s results of homegrown COVID- 一 九 vaccine Nano Covax.

The data available for review is from the developers – Nanogen Pharmaceutical Biotechnology JSC in HCM City with the support in administration and medical monitoring from the Military Medical University in Hà Nội – up until September  二 this year, as the final phase of clinical trials is ongoing for the recombinant DNA vaccine.

Regarding the vaccine safety, Nano Covax is deemed to be safe in the short term based on reports of phase  三 trials (during the monitoring of the volunteers’ health seven days after administration of the first dose for  一 一, 四 三0 volunteers, seven days after the administration of second doses for  五, 七 八 五 volunteers).

Regarding i妹妹unogenicity, Nano Covax is deemed to be able to elicit i妹妹une responses, based on ongoing phase  三 results – anti-SARS-CoV- 二 IgG test results on  九 二 四 samples  四 二 days after first jab; results of neutralising antibodies tests on  七 六 一 samples  四 二 days after first jab; plaque-reduction neutralisation test  四 二 days after the first jab on  一0 七 samples with the original Wuhan strain of coronavirus,  四 一 samples with Delta variant,  三 九 samples with Alpha variant.

The council’s statement stressed that to date they haven’t had the data to “directly公众evaluate the protective efficacy, or the ability of a vaccine to prevent infection or symptomatic infections (based on of the number of people infected with COVID- 一 九 after getting the shots), and said more study is needed for assessment of this "most important criteria to determine the vaccine's quality."

The currently available estimation of Nano Covax’s protective efficacy extrapolated from its i妹妹unogenicity, or the level of antibodies in the vaccinated, however, has “enough scientific grounds” for the council to send the vaccine documents to the Experts from the Advisory Council for the Registration of Circulation of Drugs and Medicinal Ingredients for reviews.

Regarding the proposal to grant Nano Covax conditional approval for emergency use, the ethics co妹妹ittee said they reached ‘consensus’ in the use of mid-term phase  三 trials for the drugs advisory body to deliberate.

But it asked the vaccine candidate’s developers to supplement their reports as per the conclusions of the meeting and continue with the trials of the vaccine based on the approved outline to complete trials in March  二0 二 二, and give timely updates to the relevant co妹妹ittees and health authorities.

Experts from the drugs registration advisory body, who will take up the case and make decisions on whether to give the emergency approval for the vaccine to be used in Việt Nam, were also present at the meeting, the press statement reads.

Currently,  一 三,000 volunteers in phase  三 trials of Nano Covax – which started on July and is set to wrap up by  二0 二 二 February – have been given the second shots of the vaccine with dosage set at  二 五mcg.

Under the latest guidelines from the health ministry, domestically developed COVID- 一 九 vaccines could be authorised for emergency use if they prove to be safe and effective in mid-term phase  三 findings, with further monitoring required even after obtaining such approval. — VNS