Types of vaccines for COVID-19

Vaccines train your immune system using a harmless form of the virus, SARS-CoV-2, which causes COVID-19. Vaccines stimulate an immune response without causing illness. Each type of vaccine for COVID-19 works differently to introduce antigens, which are unique features of the SARS-CoV-2 virus, to your body. The antigen triggers a specific immune response and this response […]

COVID-19 Vaccines

A vaccine that prevents COVID-19 would teach our immune system to recognize the SARS-CoV-2 virus. Then, whenever we are exposed to the virus, our immune system would be ready to leap into action, fight off the virus, and keep us healthy. Why do we need COVID-19 vaccines? To date, more than 20 million COVID-19 cases […]

How have Covid-19 vaccines been made quickly and safely?

Unprecedented international cooperation and focus have led to multiple effective and safe Covid-19 vaccines in less than a year, and created a blueprint for future vaccine development. Here’s how. The Covid-19 pandemic threatens every one of us, wherever we are, which has demanded a new global approach to vaccine development. There has been unprecedented international attention, […]

How are vaccines tested to ensure they are safe and effective?

Vaccine candidates are tested many times in progressively larger clinical trials to ensure they are safe and effective. The first clinical studies in humans are phase 1 clinical trials which primarily assess the initial safety of the vaccine and identify the correct dose. Phase I clinical trials typically enroll tens or hundreds of healthy adults. Vaccine candidates that […]

Why do antibodies fade after a COVID-19 infection, and will the same thing happen with vaccines?

Maintaining antibodies in the blood requires creating certain long-lasting immune cells – but this doesn’t always happen. by Steven Smith The goal of the COVID-19 vaccines being rolled out worldwide is to stimulate our immune systems into creating a protective response against the coronavirus, particularly by generating antibodies. These antibodies then circulate in our blood until needed […]

African countries have an advantage in rolling out Covid-19 vaccines

Concerns have been raised that African countries may struggle to effectively deploy Covid-19 vaccines at the unprecedented scale needed to counter the coronavirus pandemic. Yet Africa is one of the most experienced regions in the world in dealing with disease outbreaks. It has successfully carried out several, sudden large-scale vaccine introductions and vaccinations in crowded […]

Why having COVID-19 data on men and women is critical

Speed read COVID-19 deaths differ among men and women but the differences are not reported A project is building sex-aggregated data on COVID-19 globally Such data is key to developing effective solutions to fight COVID-19 By: Siki Kigongo Reporting COVID-19 data for both men and women is key to developing an effective response, argues Siki Kigongo. […]