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dan mcco's avatar

Shouldn't all the workers who sacrificed themselves early in the pandemic and got COVID get a passport? The healthcare workers, grocery clerks, pharmacists, truckers etc. put themselves on the line everyday. Many got COVID and now have better immunity than they would get via vaccine.

Also, lets face it, we have no idea how many people have been infected since many are asymptomatic and post immunization I suspect many more have had or carry COVID but were either asymptomatic or had symptoms they attributed to a cold or flu.

Its time we stopped living in pandemic mode and shifted to endemic mode. We have the vaccine and the vulnerable have access and soon treatments will arrive that render the disease manageable.

The sooner we start rolling back on the fear mongering from our public health officials and the power we've handed over to politicians the better.

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Ad Nausica's avatar

The efficacy claim is completely the wrong framing. The vaccine efficacy is with respect to the recipient in getting the disease, COVID-19. It isn't the efficacy of the viral (SARS-CoV-2) infection or secondary transmission to other people.

Even the Government's own science advisories say there is no basis for claiming that unvaccinated people are a higher risk of getting or transmitting the SARS-CoV-2 virus. They are only at higher risk of getting the disease themselves. Think of the vaccines like sunscreen; it helps you, but only you. It might even be near 100% perfect at it. But, vaccinated people still breath in the virus, it still sits in their nose, mouth, throat, lungs, mucus, and saliva, and they can carry it around and breath it out on people. The antibodies from the vaccines help keep it from getting inside the bloodstream and causing the disease -- COVID-19 -- symptoms.

For transmissibility, read the National Advisory Committee on Immunization (NACI) Advisory Committee Statement: https://www.canada.ca/en/public-health/services/immunization/national-advisory-committee-on-immunization-naci/recommendations-use-covid-19-vaccines.html

"There is currently limited evidence on the duration of protection and on the efficacy of these vaccines in reducing transmission of SARS-CoV-2, although studies are ongoing.” In the section “Efficacy and effectiveness against asymptomatic infection and transmission”. It notes the data is preliminary and “current data is insufficient to draw conclusions”.

Risk of transmission is a product of both transmissibility and risk of exposure, and now by far it is vaccinated people who are at risk of exposure. From Health Canada: https://www.canada.ca/en/public-health/services/diseases/2019-novel-coronavirus-infection/health-professionals/main-modes-transmission.html

"the virus is most frequently transmitted when people are in close contact with others who are infected with the virus (either with or without symptoms). We also know that most transmission occurs indoors. Reports of outbreaks in settings with poor ventilation suggest that infectious aerosols were suspended in the air and that people inhaled the virus at distances beyond 2 metres. Such settings have included choir practice, fitness classes, and restaurants, as well as other settings.”

Or read the latest summary in the Lancet: https://link.springer.com/content/pdf/10.1007/s10654-021-00808-7.pdf

Yes, hopefully viral loading is lower, but that is only one small component of transmission risk. As the paper even notes, the fact that vaccines protect you against symptoms means that vaccinated people are more likely to be carrying it around, even at lower viral load, and spreading it without knowing they are even infected. Unvaccinated people are more likely to get symptoms and isolate.

If you actually calculate the risk of transmission, a vaccinated person is a higher risk because of the exposure factor alone. Even if vaccines reduce infection and viral loading by 50%, just a doubling of risk of exposure of vaccinated people in restaurants, gyms, and airplanes nullifies that savings.

To quote a microbiologist I was discussing this with, we can all be a "Typhoid Mary" and not know it. We just don't know enough yet about which factors matter most and how to control the spread. Vaccination status of other people around you is not a risk factor at this point.

Politicians and the press need to listen to us scientists and read the science, and do the risk calculations.

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