Search for COVID-19 vaccine continues

Conducting a clinical trial in the middle of a pandemic is presenting several challenges. Courtesy #DStv403

JOHANNESBURG - Africa could have a COVID-19 vaccine in the first quarter of 2021 if human trials underway in South Africa succeed, a university professor heading the trials said on Thursday.

The ChAdOx1 nCoV-19 experimental vaccine is one of 19 being tested on humans globally in a race to find vaccines to stop a pandemic that has killed more than half a million people so far.

"A vaccine could be made commercial as early as the beginning of next year," said Shabir Madhi, professor of vaccinology at the University of Witwatersrand who is leading the South African trial.

READ: Pressure to develop COVID-19 vaccine, but corners can't be cut

"But it is completely dependent on the results of clinical trials," he cautioned, adding that out of the 19 potential vaccines being tried out, the most positive outcome would be if even two succeed.

Trials will depend on 2,000 volunteers aged 18-65-years who will be monitored for 12 months after vaccination to asses its efficacy.

Madhi, however, said early results could be seen by November or December.

READ: COVID-19 vaccine: The challenges of running a trial in the middle of a pandemic

"The timing of an efficacy read-out depends on when we have approximately 42 Covid-19 cases at least one month after vaccination," he said.

COVID-19 cases in Africa topped half a million as of Wednesday, with almost 12,000 deaths.

Madhi said governments must put in an upfront purchase order for the potential vaccine.

READ: South Africa to start Africa's first coronavirus vaccine trial

A number of countries, including the United States and several in the European Union, have struck deals with drugmakers to reserve supplies of the experimental vaccines, even before they have been approved.

African manufacturers have not manufactured a single vaccine in the last 25-years, Madhi said.

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Source
Reuters