Comparing COVID-19 Vaccines

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When will the COVID-19 vaccines be available to me and what are those? Try to peek at the Department of Health (DOH) page. You will see that the government is currently in the initial phase of vaccine rollout. But the government follows prioritization to reduce mortality and preserve the health system capacity of the Philippines. Naturally, mostly eligible are the front liners, senior citizens and persons with comorbidities. Then teachers and social workers OFWs and remaining workforce. Lastly, the rest of the Filipino population. By the way, government will pay the vaccines for the priority groups. For me, I belong to remaining workforce. But I already heard that our company will provide free vaccines to employees mid-June.

Additional information from DOH, we need to follow the required age for vaccination. Let us discuss in detail later. I remember my antigen test and it’s a nightmare! Good thing we have vaccine now and we could have gatherings again, go to beaches and enjoy outdoors! But what are the available vaccines now?

Related Article: Covid-19 impact on our mental health

Sinovac (Chinese) COVID-19 Vaccines

The Chilean Ministry of Health has reported that the Chinese pharmaceutical company Sinovac Covid-19 vaccine CoronaVac demonstrated to be up to 67% effective in preventing symptomatic infections in a study. It also had 89% effectiveness in preventing intensive care unit admission and 80% effectiveness in preventing death caused by the virus. The study included approximately 10.5 million individuals aged 16 years or above. (Source pharmaceutical-technology.com) Sinovac can be given to clinically healthy individuals 18 to 59 years old. (Source DOH)

The Sinovac CoronaVac vaccine uses a virus to create immunity. However, instead of adenovirus, the vaccine uses inactivated particles of the SARS-CoV-2 virus that causes COVID-19. Adenovirus is a very common virus. Usually causing mild illnesses like the common cold, adenoviruses are widespread and efficient. There are more than 50 types of adenoviruses that cause respiratory infections, and they are good at moving into and attacking the body in various ways. A chimpanzee adenovirus is an adenovirus that causes these infections in chimpanzees. (Source Healthline)

AstraZeneca (British) COVID-19 Vaccines

AstraZeneca claimed that the vaccine was 70-percent effective. It was later disclosed that the effectiveness was 62 percent. But Trusted Source in people who received two full doses, and closer to 90 percent in people who received one half and one full dose. AstraZeneca used these two percentages to average an effectiveness rate of 76 percent.

In addition, AstraZeneca and Sinovac vaccines use a more traditional route. This means that actual virus particles or genetic materials are combined with other materials. And the purpose is to introduce small, harmless pieces of the virus into your body. Your immune system is able to use this information to design a defense, making it better equipped to fight the live virus. Moreover, AstraZeneca vaccine relies on a chimpanzee adenovirus to carry spike proteins from the coronavirus into your body to create an immune response. (Source Healthline)

Pfizer-BioNTech (German) COVID-19 Vaccines

The first COVID-19 vaccine to receive an FDA EUA. After the company reported positive clinical trial data, which included news that the vaccine was up to 95% effective at preventing symptomatic disease. It is recommended for anyone 12 or older. It serves as a messenger RNA (mRNA) vaccine, which uses a relatively new technology. 

Other vaccines put a weakened or inactivated disease germ into the body. But Pfizer-BioNTech mRNA vaccine delivers a tiny piece of genetic code from the SARS CoV-2 virus to host cells in the body. It gives those cells instructions, or blueprints, for making copies of spike proteins. The spikes do the work of penetrating and infecting host cells. As a result, these proteins stimulate an immune response, producing antibodies and developing memory cells that will recognize and respond if the body is infected with the actual virus. (Source Yale Medicine)

Moderna (American) COVID-19 Vaccines

It received FDA EUA about a week after the Pfizer vaccine. Moderna is also an mRNA vaccine, using the same technology as the Pfizer-BioNTech one and with a similarly high efficacy, 95% at preventing symptomatic disease. It is recommended for adults 18 or older. Similar to the Pfizer vaccine, this is an mRNA vaccine that sends the body’s cells instructions for making a spike protein that will train the immune system to recognize it. The immune system will then attack the spike protein the next time it sees one. (Source Yale Medicine)

Well now you know the difference of these four vaccines. I hope you will not say no to free vaccine if you are part of the priority groups. In order for us to be free of mask, and we can travel again whenever we want to. It saddens me that even in our company, survey result is only 48%. Think about it, grab the chance so we can be free again!

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