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 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 […]

Vaccines against SARS-CoV-2 will have side effects – that’s a good thing

The side effects of new SARS-CoV-2 vaccines are a result of immune system activation. While uncomfortable, they are both normal and expected. They are a sign that the vaccine is working. by Matthew Woodruff Takeaways Temporary side effects from vaccines are a normal sign of a developing immune response. Vaccines work by training your immune […]

What are COVID-19 challenge trials and why do we need them?

A new trial about to start in the UK will deliberately infect people with the virus that causes COVID-19 – if we have vaccines already, why do we need this? by Priya Joi WHAT ARE CHALLENGE TRIALS? Clinical trials of COVID-19 vaccines involve randomly dividing participants into two groups and giving one group the experimental vaccine, and […]