Doubts arise over efficacy of China-produced Sinopharm vaccine

Bahrain recommends Pfizer boosters for over 50s with comorbidities after a COVID-19 surge, despite high Sino Farm vaccination rates. The Sino Farm vaccine uses inactivated viruses to teach the immune system to fight the coronavirus. Antigen presenting cells process these viruses, activating T and B cells. Memory B cells help the body remember and reproduce antibodies. Despite the surge, most hospitalized were unvaccinated, showing Sino Farm's effectiveness.

Why did Bahrain recommend a Pfizer BioNTech booster for certain individuals?

• Due to a shortage of Sino Farm vaccines

• To test the effectiveness of Pfizer BioNTech

• To replace the Sino Farm vaccine

• To enhance immunity after the Sino Farm vaccine

What is the primary function of inactivated viruses in the Sino Farm vaccine?

• To cause mild symptoms of COVID-19

• To replicate and spread the virus

• To teach the immune system to attack the virus

• To replace the body's natural antibodies

Which cells are responsible for creating antibodies in response to the Sino Farm vaccine?

• Antigen-presenting cells

• B cells

• Cytotoxic T cells

• Helper T cells

What was a significant factor in Bahrain's decision to recommend booster shots?

• A new variant of the virus

• A recent surge in COVID-19 cases

• A change in government policy

• A decrease in vaccine supply

What percentage of hospitalized COVID-19 patients in Bahrain were unvaccinated during the recent wave?

• 70%

• 100%

• 90%

• 50%