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)
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 patient receives a shot in a clinical trial for a COVID-19 vaccine.
AP Photo/Ted S. Warren
Our best shot at ending the pandemic is by achieving herd immunity through widespread use of a vaccine. But that won't happen unless people believe it's safe.
A researcher working on the University of Oxford/AstraZeneca vaccine in Buenos Aires.
The COVID-19 vaccine is in the final stages of testing – meaning we should know whether it's effective before the end of the year.
Church leaders have raised concerns over a COVID-19 vaccine produced using cells derived from aborted foetuses. But the Vatican has already ruled such vaccines 'morally separate' from the abortions.
A two-dose coronavirus vaccine would mean we need to produce 12-15 billion doses. This is roughly twice the world's current total vaccine manufacturing capacity.
Vaccinologists have not focused their research on tailoring vaccines to induce robust immune responses in the elderly.
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.
The experimental vaccine stimulates the creation of antibodies. Now we need to show that these effectively protect us from the coronavirus.
A general view during the country’s first human clinical trial for a potential COVID-19 vaccine in Soweto, South Africa.
Felix Dlangamandla/Beeld/Gallo Images via Getty Images
There isn't enough clinical research being done in Africa. This has had a lot of repercussions in terms of the timing when interventions become available and effective in high income countries.
Are we really all in this together? ‘Vaccine nationalism’ must be addressed to ensure equitable distribution of a COVID-19 vaccine.
Word that the U.S. has bought up the entire supply of the COVID-19 drug remdesivir is another reminder that in a pandemic, treatments and vaccines need to be accessible to everyone, globally.
The scope and length of vaccine testing experiments usually mean decade-long timelines for development.
It usually takes 10 years for a new vaccine to complete clinical trials, but we've been promised a COVID-19 vaccine in 12 to 18 months. Even if such fast-tracked development is possible, is it wise?
Dr. Anthony Fauci said that a vaccine could be available as early as January 2021.
AP Photo/Alex Brandon/File
As most of the world early awaits a vaccine for COVID-19, a smaller group of people scoffs. They could spell real trouble in the effort to build widespread immunity.
A test that detects antibodies against the coronavirus behind COVID-19 would reveal those people who have already encountered the virus - and therefore who might be ok to resume normal life.
A vaccine must go through six crucial steps.
Researchers around the world are working hard on developing a vaccine – but the process may still take 12-18 months. Here's why.
We urgently need a vaccine for COVID-19 but exposing humans to a vaccine candidate that hasn't undergone the usual safety assessments is risky.
Researchers around the world are working together to control the coronavirus outbreak, now known as COVID-19. This is what's behind the global effort to develop a vaccine.
A Masai herdsman walks with his cattle in Amboseli National Park in Kenya.
Lung plague attacks cattle causing disease and death, and more than US$60 million in losses annually in Africa. A new vaccine could prevent the disease.
Vaccines need to be kept cold to remain effective. A lack of power in remote areas makes this difficult, reducing the reach of the life-saving pharmaceuticals.
Manufacturing one of the world's most important vaccines will have several benefits for South Africa.
Could the yearly flu shot become a thing of the past?
AP Photo/Darron Cummings, File
Flu virus mutates so quickly that one year's vaccine won't work on the next year's common strains. But rational design – a new way to create vaccines – might pave the way for more lasting solutions.
What if it wasn’t back to the drawing board every year for a new flu shot?
Flu virus mutates so quickly that one year's vaccine won't work on the next year's common strains. But a new way to create vaccines, called 'rational design,' might pave the way for more lasting solutions.