Category Archives: Tak Berkategori

Manufacturing, safety and quality control of vaccines part 1

How a vaccine is approved for production Once a vaccine has reached pre-approval stage following clinical trials, it is assessed by the relevant regulatory body for compliance with quality, safety and efficacy criteria. Following regulatory approval, manufacturers can submit a … Continue reading

Posted in Tak Berkategori | Leave a comment

There are four types of COVID-19 vaccines part 28

What are viral vector-based vaccines and how could they be used against COVID-19? How easy are they to manufacture? A major bottleneck for viral vector vaccine production is scalability. Traditionally, viral vectors are grown in cells that are attached to … Continue reading

Posted in Tak Berkategori | Leave a comment

There are four types of COVID-19 vaccines part 27

What are viral vector-based vaccines and how could they be used against COVID-19? How do such vaccines trigger immunity One challenge of this approach is that people may previously have been exposed to that virus vector and raise an immune … Continue reading

Posted in Tak Berkategori | Leave a comment

There are four types of COVID-19 vaccines part 26

What are viral vector-based vaccines and how could they be used against COVID-19? How do such vaccines trigger immunity? This response includes antibody-producing B cells, as well as T cells, which seek out and destroy infected cells. T cells do … Continue reading

Posted in Tak Berkategori | Leave a comment

There are four types of COVID-19 vaccines part 25

What are viral vector-based vaccines and how could they be used against COVID-19? How do such vaccines trigger immunity? Once injected into the body, these vaccine viruses begin infecting our cells and inserting their genetic material-including the antigen gene-into the … Continue reading

Posted in Tak Berkategori | Leave a comment

There are four types of COVID-19 vaccines part 24

What are viral vector-based vaccines and how could they be used against COVID-19? How do such vaccines trigger immunity? There are two main types of viral vector-based vaccines. Non-replicating vector vaccines are unable to make new viral particles; they only … Continue reading

Posted in Tak Berkategori | Leave a comment

There are four types of COVID-19 vaccines part 23

What are viral vector-based vaccines and how could they be used against COVID-19? How do such vaccines trigger immunity? Various viruses have been developed as vectors, including adenovirus (a cause of the common cold), measles virus and vaccinia virus. These … Continue reading

Posted in Tak Berkategori | Leave a comment

There are four types of COVID-19 vaccines part 22

What are viral vector-based vaccines and how could they be used against COVID-19? How do such vaccines trigger immunity? Viruses survive and replicate by invading their host’s cells and hijacking their protein-making machinery, so it reads the virus’ genetic code … Continue reading

Posted in Tak Berkategori | Leave a comment

There are four types of COVID-19 vaccines part 21

What are viral vector-based vaccines and how could they be used against COVID-19? Advantages and disadvantages of viral vector based vaccines: Well-established technology Strong immune response Immune response involves B cells and T cells Previous exposure to the vector could … Continue reading

Posted in Tak Berkategori | Leave a comment

There are four types of COVID-19 vaccines part 20

What are viral vector-based vaccines and how could they be used against COVID-19? Viral vector-based vaccines differ from most conventional vaccines in that they don’t actually contain antigens, but rather use the body’s own cells to produce them. They do … Continue reading

Posted in Tak Berkategori | Leave a comment