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Artículos sobre Vaccine development

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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.
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.
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

COVID-19 vaccine trial in South Africa: everything you need to know

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.
Could the yearly flu shot become a thing of the past? AP Photo/Darron Cummings, File

Influenza: The search for a universal vaccine

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? Andrew Kelly/Reuters

Influenza: The search for a universal vaccine

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.

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