|Vaccine type||Viral vector|
|Part of a series on the|
AD5-nCOV, trade-named Convidecia, is a single-dose viral vector vaccine for COVID-19 that is also used as an inhaled booster. It was developed by CanSino Biologics, with Phase III trials conducted in Argentina, Chile, Mexico, Pakistan, Russia, and Saudi Arabia with 40,000 participants.
In February 2021, global data from Phase III trials and 101 COVID cases showed that the intramuscular version of the vaccine had a 65.7% efficacy in preventing moderate symptoms of COVID-19, and 91% efficacy in preventing severe disease. It has similar efficacy to the Janssen vaccine, another one-shot adenovirus vector vaccine with 66% efficacy in a global trial. Convidecia is similar to other viral vector vaccines like AZD1222, Gam-COVID-Vac, and Ad26.COV2.S. Its single-dose regimen and normal refrigerator storage requirement (2° to 8 °C) could make it a favorable vaccine option for many countries. It is currently under evaluation for emergency use listing by the WHO. On May 19 2022, WHO issued EUL for the vaccine.
A Phase I study published in The Lancet showed two doses of a nebulised version of Convidecia (inhaled through the mouth) resulted in neutralising antibody responses similar to the existing one-dose injection.
Convidecia and the Pakistani version called PakVac are approved for use by some countries in Asia, Europe, and Latin America. Production capacity for Ad5-NCov should reach 500 million doses in 2021. Manufacturing will take place in China, with filling and finishing of the vaccine additionally also taking place in Malaysia, Mexico, and Pakistan.
In February 2021, data released from an interim analysis of Phase III trials with 30,000 participants and 101 COVID cases showed that globally, the vaccine administered as an intramuscular injection had an efficacy of 65.7% at preventing moderate cases of COVID-19 and 90.98% efficacy at preventing severe cases. In the Pakistan trial subset, the vaccine had an efficacy of 74.8% at preventing symptomatic cases, and 100% for preventing severe disease.
While the efficacy rates were lower than the Pfizer–BioNTech and Moderna vaccines, its single-dose regimen and normal refrigerator storage requirement (2 to 8 °C) could make it a favorable option for many countries. It has similar efficacy to the Janssen vaccine, another one-shot adenovirus vaccine found to be 66% effective in a global trial.
In February, Chen Wei, who lead the development of the vaccine, said annual production capacity for Ad5-NCov could reach 500 million doses in 2021.
In Malaysia, filling and finishing of the vaccine for distribution would be completed by Solution Biologics.
In May, Pakistan began filling and finishing 3 million doses a month at the National Institute of Health, which would be branded as PakVac for domestic distribution.
If the vaccine is approved in Russia, Petrovax said it has the ability to fill and finish 4 million doses per month to start with, eventually reaching a target of 10 million doses a month in 2021. The company eventually hopes to build a plant within 3 years to manufacture Convidecia in Russia.
In early 2020, Chen Wei led a joint team of the Institute of Biotechnology, the Academy of Military Medical Sciences, and CanSino Biologics to develop AD5-nCOV. According to the Chinese state media, the team registered an experimental COVID-19 vaccine for Phase I trial in China on 17 March 2020, to test its safety. The trial was conducted on 108 healthy adults aged 18 to 60 in two medical facilities in Wuhan, Hubei province.
In April, Ad5-nCoV became the first COVID-19 vaccine candidate in the world to begin Phase II trials. The Phase II trial results were published in the peer-reviewed journal The Lancet in August 2020, and noted neutralizing antibody and T cell responses based on statistical analyses of data involving 508 eligible participants. In September, Zeng Guang, chief scientist of the Chinese Center for Disease Control and Prevention, said the amount of COVID-19 antibodies in subjects from the Phase I trials remained high six months after the first shot. Zeng said the high levels of antibodies suggested the shots may provide immunity for an extended period of time, although Phase III results were still required. On September 24, CanSino began Phase IIb trials on 481 participants to evaluate the safety and immunogenicity of Ad5-nCoV for children ages 6–17 and elderly individuals ages 56 and above.
On 16 May 2020, Canadian Prime Minister Justin Trudeau announced Health Canada had approved Phase II trials to be conducted by the Canadian Center for Vaccinology (CCfV) on the COVID-19 vaccine produced by CanSino. Scott Halperin, director of the CCfV, said the vaccine would not be the only one going into clinical trials in Canada, and any potential vaccine would not be publicly available until after Phase 3 is complete. If the vaccine trials were successful, then the National Research Council would work with CanSino to produce and distribute the vaccine in Canada. In August 2020, the National Research Council disclosed the vaccine had not been approved by Chinese customs to ship to Canada, after which the collaboration between CanSino and the Canadian Center for Vaccinology was abandoned.
Trials of inhaled version (Convidecia Air)
In September 2020, CanSino began a Phase I trial in China with 144 adults to determine safety and immunogenicity when inhaled through the mouth with nebulizer rather than intramuscular injection, with results published in 2021. On June 3, 2021, expansion of clinical trials was approved by the NMPA and the nasal spray applied for Emergency Use Listing.
In July 2021, results published in The Lancet showed two doses of the inhaled version resulted in neutralising antibody responses similar to the existing one-dose injection and recommended the efficacy and cost-effectiveness of the nasal vaccine to be evaluated in Phase II/III studies.
In April 2021, a new trial was registered in Jiangsu involving one dose of Convidecia followed by a dose of ZF2001 28 or 56 days later using different technologies as a way to further boost efficacy.
In July, 2021, Cansino said it would begin combination trials with a dose of Sputnik V followed by a dose of Convidecia. This would address a supply shortage of Sputnik V, which has had difficulties in supplying the second dose in sufficient quantities compared to the first dose.
In February 2021, Mexico approved the vaccine for emergency use.
On 15 June 2021, Malaysia’s National Pharmaceutical Regulatory Agency (NPRA) has issued conditional registration for emergency use of the vaccine.
In December 2020, Mexico's Foreign Minister Marcelo Ebrard signed an agreement for 35 million doses. Mexico received active ingredients for 2 million doses with a total of 6 million doses expected to arrive in February.
In February 2021, Malaysia's Solution Biologics agreed to supply 3.5 million Convidecia doses to the government. The doses would be delivered starting in April with 500,000 complete doses, with the rest in bulk to be finished by Solution Biologics.
In June 2021, Malaysia's coordinating minister for COVID-19 Immunisation, Khairy Jamaluddin, confirmed refugee communities in Malaysia would receive the vaccine; with the first shipment due to arrive in late July. By 19 September 2021, more than 70,000 people in Malaysia had received the Convidecia vaccine. The COVID-19 Immunisation Task Force has prioritised the single-dose vaccine for communities living in remote areas including the Orang Asli as well as the homeless and undocumented individuals. Priority states for the CanSino vaccine included Sabah, Johor, Kedah, Kelantan, Perak, Sabah, and Terengganu.
- "It's not just Johnson & Johnson: China has a single-dose COVID-19 vaccine that has 65% efficacy". Fortune. Retrieved 2021-02-11.
- "Comenzará en la Argentina un nuevo estudio de vacuna recombinante contra el SARS-CoV-2". infobae (in European Spanish). 14 December 2020. Retrieved 2020-12-15.
- "Gob.cl - Article: Science Minister: "We Work With Maximum Rigor So That Science And Technology Benefit People'S Health"". Government of Chile. Retrieved 2020-11-21.
- "Chinese Covid vaccine trials to be expanded to five more states". Mexico News Daily. 2020-11-10. Retrieved 2020-11-11.
- Clinical trial number NCT04526990 for "Phase III Trial of A COVID-19 Vaccine of Adenovirus Vector in Adults 18 Years Old and Above" at ClinicalTrials.gov
- "Russia approves clinical trials for Chinese COVID-19 vaccine Ad5-Ncov: Ifax". Reuters. 2020-12-07. Retrieved 2020-12-07.
- Eltahir N (9 August 2020). "CanSino to start Phase III trial of COVID-19 vaccine in Saudi". Reuters. Retrieved 9 August 2020.
- "CanSinoBIO's COVID-19 vaccine 65.7% effective in global trials, Pakistan official says". Reuters. 8 February 2021. Retrieved 2021-02-08.
- "China's CanSino Covid Vaccine Shows 65.7% Efficacy". Bloomberg.com. 2021-02-08. Retrieved 2021-02-10.
- Zimmer C, Corum J, Wee SL (2020-06-10). "Coronavirus Vaccine Tracker". The New York Times. ISSN 0362-4331. Retrieved 2020-12-12.
- "Status of COVID-19 Vaccines within WHO EUL/PQ evaluation process" (PDF). World Health Organization. 15 July 2021. Archived (PDF) from the original on 2021-07-16.
- "WHO Validates 11th Vaccine for COVID-19". World Health Organization. 19 May 2022.
- Wu S, Huang J, Zhang Z, Wu J, Zhang J, Hu H, et al. (July 2021). "Safety, tolerability, and immunogenicity of an aerosolised adenovirus type-5 vector-based COVID-19 vaccine (Ad5-nCoV) in adults: preliminary report of an open-label and randomised phase 1 clinical trial". The Lancet. Infectious Diseases. 21 (12): 1654–1664. doi:10.1016/S1473-3099(21)00396-0. PMC 8313090. PMID 34324836.
- Liu R (2021-02-25). "China approves two more domestic COVID-19 vaccines for public use". Reuters. Retrieved 2021-02-26.
- "Pakistan purchases over 30 million COVID doses from China: sources". ARY NEWS. 2021-04-25. Retrieved 2021-04-26.
- "Malaysia to receive CanSino vaccine this month | The Malaysian Insight". www.themalaysianinsight.com. Retrieved 2021-04-03.
- Ashok R (2021-03-22). "UPDATE 2-China's CanSino Biologics COVID-19 vaccine receives emergency use approval in Hungary". Reuters. Retrieved 2021-03-22.
- "Membrii NITAG au venit cu recomandări privind utilizarea vaccinurilor împotriva COVID-19 în Republica Moldova". Ministerul Sănătății, Muncii și Protecţiei Sociale. 2021-03-03. Retrieved 2021-05-21.
- "'Our gratitude always': From China's CanSino, Mexico welcomes biggest vaccine shipment yet". Reuters. 2021-02-11. Retrieved 2021-02-11.
- "Argentina issues emergency approval to China's single-dose Cansino COVID-19 vaccine". Reuters. 2021-06-11. Retrieved 2021-06-11.
- "ISP Approves Emergency Use And Importation Of Cansino Vaccine To Fight COVID-19". Institute of Public Health of Chile. Archived from the original on 2021-04-07. Retrieved 2021-04-08.
- "China can hit 500-mln-dose annual capacity of CanSinoBIO COVID-19 vaccine this year". finance.yahoo.com. 27 February 2021. Archived from the original on 2021-02-27. Retrieved 2021-02-28.
- Solomon DB (2021-02-28). "China's CanSino says first vaccines packaged in Mexico will be ready in March". Reuters. Retrieved 2021-03-12.
- "Pakistan develops homemade anti-Covid vaccine 'PakVac'". The Express Tribune. 2021-05-24. Retrieved 2021-05-25.
- Constable P, Hussain S. "Defying fears and skepticism, thousands in Pakistan volunteer for Chinese vaccine trials". The Washington Post. ISSN 0190-8286. Retrieved 2021-01-01.
- "Covid vaccine: Pakistan starts production of CanSino, China's single-dose jab". Khaleej Times. Archived from the original on 2021-05-25. Retrieved 2021-05-28.
- "Russian Recruits Show 'No Side Effects' in Chinese Coronavirus Vaccine Trials". The Moscow Times. 2020-09-21. Retrieved 2020-09-22.
- "Petrovax wins in two categories of Russian Pharma Inspiration Awards competition". petrovax.com. Archived from the original on 2021-07-09. Retrieved 2021-07-09.
- Cui J (23 March 2020). "Human vaccine trial gets underway". China Daily. Retrieved 18 April 2020.
- Xie J (15 April 2020). "China Announces Phase 2 of Clinical Trials of COVID-19 Vaccine". Voice of America. Retrieved 18 April 2020.
- Zhu FC, Guan XH, Li YH, Huang JY, Jiang T, Hou LH, et al. (August 2020). "Immunogenicity and safety of a recombinant adenovirus type-5-vectored COVID-19 vaccine in healthy adults aged 18 years or older: a randomised, double-blind, placebo-controlled, phase 2 trial". Lancet. 396 (10249): 479–488. doi:10.1016/S0140-6736(20)31605-6. PMC 7836858. PMID 32702299.
- O'Brien E (2020-09-25). "Covid Antibodies Endure Over Six Months in China Trial Subjects". www.bloomberg.com. Archived from the original on 2020-09-29. Retrieved 2020-09-29.
- Clinical trial number NCT04566770 for "Phase IIb Clinical Trial of A COVID-19 Vaccine Named Recombinant Novel Coronavirus Vaccine (Adenovirus Type 5 Vector)" at ClinicalTrials.gov
- Yu S (17 August 2020). "China grants country's first COVID-19 vaccine patent to CanSino: state media". Reuters. Retrieved 17 August 2020.
- Bogart N (16 May 2020). "Health Canada approves first clinical trial for potential COVID-19 vaccine". CTV News. Retrieved 7 September 2020.
- Ryan H (May 16, 2020). "Canada's first COVID-19 vaccine trials approved for Halifax university". CBC News. Retrieved January 4, 2021.
- Cooke A (26 August 2020). "Canadian COVID-19 clinical trial scrapped after China wouldn't ship potential vaccine". CBC News. Retrieved 7 September 2020.
- Clinical trial number NCT04552366 for "A Clinical Trial of a Recombinant Adenovirus 5 Vectored COVID-19 Vaccine (Ad5-nCoV) With Two Doses in Healthy Adults" at ClinicalTrials.gov
- Wu S, Huang J, Zhang Z, Wu J, Zhang J, Hu H, et al. (December 2021). "Safety, tolerability, and immunogenicity of an aerosolised adenovirus type-5 vector-based COVID-19 vaccine (Ad5-nCoV) in adults: preliminary report of an open-label and randomised phase 1 clinical trial". The Lancet. Infectious Diseases. 21 (12): 1654–1664. doi:10.1016/S1473-3099(21)00396-0. PMC 8313090. PMID 34324836.
- Cao X, Liu Y (2021-06-04). "陈薇院士：雾化吸入式新冠疫苗正在申请紧急使用". Sci Tech Daily. Chinanews.com. Retrieved 2021-06-04.
- "CanSinoBIO's Convidecia Air™ Receives Approval in China". www.cansinotech.com. CanSino Bio. Retrieved 29 October 2022.
- Gao, Jiaxuan (December 2022). "Vaccination with CanSinoBIO's inhaled COVID-19 vaccine has begun in China". Journal of Biosafety and Biosecurity. 4 (2): 163. doi:10.1016/j.jobb.2022.12.002. PMC 9791787. PMID 36589793.
- "México recibe el primer lote de la vacuna candidata de CanSino Biologics; alistan pruebas". EL CEO (in Mexican Spanish). 2020-11-03. Retrieved 2020-11-03.
- Clinical trial number NCT04540419 for "Clinical Trial of Recombinant Novel Coronavirus Vaccine (Adenovirus Type 5 Vector) Against COVID-19" at ClinicalTrials.gov
- Bloomberg News (2020-11-25). "Russia's Richest Man Seeks Global Market for Local Covid-19 Drug - BNN Bloomberg". BNN. Retrieved 2020-11-28.
- Yáñez PL (2020-11-15). "Así funcionan las cuatro vacunas que se probarán en Chile". La Tercera. Retrieved 2020-11-17.
- "China trials mixing of CanSinoBIO's and Zhifei Longcom's COVID-19 vaccines -data". Reuters. 2021-04-19. Retrieved 2021-06-16.
- "China's CanSino to pair its vaccine with Russia's Sputnik V in trial". South China Morning Post. 2021-07-30. Retrieved 2021-07-30.
- "CanSino's COVID-19 vaccine candidate approved for military use in China". Reuters. 2020-06-29. Retrieved 2020-12-13.
- "Mexico approves China's CanSino and Sinovac COVID-19 vaccines". Reuters. 10 February 2021.
- Shahzad A (2021-02-12). "Pakistan approves Chinese CanSinoBIO COVID vaccine for emergency use". Reuters. Retrieved 2021-02-12.
- "Malaysia Approves Pfizer Jab For Teens, CanSino And J&J Covid-19 Vaccines". CodeBlue. 15 June 2021. Archived from the original on 25 June 2021. Retrieved 17 July 2021.
- "BPOM Terbitkan Izin Penggunaan Darurat Vaksin Covid-19 Produksi Johnson & Johnson dan Cansino". KOMPAS.com (in Indonesian). 2021-09-07. Archived from the original on 2021-09-07. Retrieved 2021-09-07.
- "China approves inhaled Covid vaccine". BBC News. 5 September 2022. Archived from the original on 5 September 2022. Retrieved 6 September 2022.
- "CanSino's inhaled COVID vaccine gets emergency use approval in China". Nikkei Asia. Reuters. 4 September 2022. Archived from the original on 5 September 2022. Retrieved 6 September 2022.
- "Mexico agrees to buy 35 million doses of CanSino COVID vaccine". Reuters. 2020-12-10. Retrieved 2020-12-10.
- Mandl, Carolina (2021-10-01). "Brazil's Biomm signs deals to distribute Cansino COVID-19 vaccine". Reuters. Retrieved 2021-10-02.
- Sherwood D (2021-03-30). "Chile inks deal for 1.8 million doses of CanSino COVID-19 vaccine as inoculation drive plows ahead". Reuters. Retrieved 2021-03-30.
- Valencia A. "Ecuador authorizes use of China's CanSino vaccine against COVID-19". Reuters. Archived from the original on 2021-08-23. Retrieved 2021-06-16.
- Taufiqurrahman M. "Indonesia can be manufacturing hub for COVID-19 vaccine, says Chinese foreign minister". The Jakarta Post. Retrieved 13 October 2020.
- "Malaysia's Solution Group to supply 3.5 million doses of CanSino vaccine to government". Reuters. 2021-02-04. Retrieved 2021-02-04.
- Timbuong J (21 June 2021). "Covid-19: Refugees in Malaysia to get CanSino vaccine, says Khairy". The Star. Archived from the original on 22 June 2021. Retrieved 22 June 2021.
- Ahmad R (19 September 2021). "INTERACTIVE: How single-dose Covid-19 vaccines help protect Malaysia's remote communities". The Star. Archived from the original on 23 September 2021. Retrieved 23 September 2021.
- Zhu FC, Li YH, Guan XH, Hou LH, Wang WJ, Li JX, et al. (June 2020). "Safety, tolerability, and immunogenicity of a recombinant adenovirus type-5 vectored COVID-19 vaccine: a dose-escalation, open-label, non-randomised, first-in-human trial". Lancet. 395 (10240): 1845–1854. doi:10.1016/S0140-6736(20)31208-3. PMC 7255193. PMID 32450106.