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Articles on Vaccine development

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Mink can be readily infected with SARS-CoV-2 and then pass the virus to humans. (Shutterstock)

The mink link: How COVID-19 mutations in animals affect human health and vaccine effectiveness

In the disturbing scenario of human-to-mink-to-human COVID-19 transmission, the virus may mutate in mink prior to re-infecting people. That possibility makes vaccine design even more crucial.
Samples from volunteers are handled in the laboratory at Imperial College in London, on July 30, 2020. Imperial College is working on the development of a COVID-19 vaccine. (AP Photo/Kirsty Wigglesworth)

Canada’s COVID-19 Vaccine Task Force needs better transparency about potential conflicts of interest

With lives depending on a vaccine, trust in Canada’s COVID-19 Vaccine Task Force is crucial. Members of the task force need to make any industry links or potential conflicts of interest publicly clear.
A worker inspects vials of a SARS CoV-2 vaccine for COVID-19 produced by SinoVac at its factory in Beijing on Sept. 24, 2020. (AP Photo/Ng Han Guan)

Training our immune systems: Why we should insist on a high-quality COVID-19 vaccine

Our first exposure to a pathogen, either naturally or via vaccination, can affect how our immune system responds in the future to the same or similar pathogens.
Research technician Leon McFarlane handles a blood sample from a volunteer in the laboratory at Imperial College in London, where a COVID-19 vaccine is under development, on July 30, 2020. (AP Photo/Kirsty Wigglesworth)

Canada’s ‘me first’ COVID-19 vaccine strategy may come at the cost of global health

With $1 billion in advance purchase agreements for COVID-19 vaccines, Canada has joined the vaccine nationalists: rich countries buying up more than half the global short-term supply of vaccine.
A lab technician holds a vial of a COVID-19 vaccine candidate during testing at the Chula Vaccine Research Center, run by Chulalongkorn University in Bangkok, Thailand on May 25, 2020. (AP Photo/Sakchai Lalit)

Explainer: How clinical trials test COVID-19 vaccines

Will a vaccine for COVID-19 be safe? Animal testing, human clinical trials and post-approval surveillance give us good grounds to believe that a future approved vaccine will work and be safe.
A scientist holding a coronavirus vaccine at the Nikolai Gamaleya National Center of Epidemiology and Microbiology in Moscow, Russia. Alexander Zemlianichenko Jr/Russian Direct Investment Fund/AP/AAP

Russia’s coronavirus vaccine hasn’t been fully tested. Doling it out risks side effects and false protection

If the vaccine does not protect individuals from infection, those who have been vaccinated could falsely believe they are protected.
Vaccinologists have not focused their research on tailoring vaccines to induce robust immune responses in the elderly. (Shutterstock)

Why vaccines are less effective in the elderly, and what it means for COVID-19

Immunosenescence — the decline of immune system function with age — means that vaccines are not as effective in older adults, the demographic most susceptible to many diseases, including COVID-19.

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