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The budget airline said the delay may last till the summer of 2024, and it was too early to say if it would receive the full order of 57 jets by May 2024
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Coronavirus: Chinese mRNA-based Covid-19 vaccines effective in preclinical trials
The doses could offer protection against the Beta and Omicron variants
Two mRNA-based Covid-19 vaccine candidates produced by Chinese manufacturer CanSino Biologics have proven effective in preclinical trials, suggesting the potential for human tests, according to a new study published in the journal Emerging Microbes & Infections.
Results showed that the two vaccines, the mRNA-Beta and mRNA-Omicron, can induce high-tier neutralising antibody levels against original and multiple SARS-CoV-2 variants, such as Beta, Delta and Omicron.
Two doses of mRNA-Beta could induce broad protection, especially for the Beta and original variants. Meanwhile, mRNA-Omicron was suggested as a booster injection in mice vaccinated with primary mRNA-Beta or Ad5-nCoV, the company’s recombinant Covid-19 vaccine, to offer further protection against the Omicron variant, according to the study.
The Chinese mRNA vaccines got clinical trial approval in April and they have entered phase-1 human trials, according to a company statement released this week.
Compared with traditional vaccine technologies, the mRNA technology has the advantage of a shorter development and production cycle.
The Chinese vaccine maker said an industrialisation base of the Covid-19 mRNA vaccine was under construction in Shanghai. It will enable the annual production capacity to reach 100 million doses by the end of 2022.
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