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>They increase the risk of asymptomatic transmission, since the person would otherwise self-isolate. This is conjecture. It's a hypothetical effect to take in

>They increase the risk of asymptomatic transmission, since the person would otherwise self-isolate. This is conjecture. It's a hypothetical effect to take into consideration, but it's certainly not borne out in data that the vaccines increase asymptomatic transmission, much less for this reason.

walterbell 5y ago
Let's look at the CDC website, https://www.cdc.gov/coronavirus/2019-ncov/vaccines/fully-vaccinated-guidance.html https://www.cdc.gov/coronavirus/2019-ncov/vaccines/fully-vac... > Based on evolving evidence, CDC recommends fully vaccinated people get tested 5-7 days after close contact with a person with suspected or confirmed COVID-19. For many people, this description could apply to daily activity, e.g. riding on public transit. So the CDC is recommended regular testing of vaccinated people. Since the vaccine can suppress symptoms, testing can be used to detect infection earlier, enabling isolation and/or treatments which only work early in the progression of Covid. In a July 2021 paper from academics advising UK SAGE, https://www.gov.uk/government/publications/long-term-evolution-of-sars-cov-2-26-july-2021 https://www.gov.uk/government/publications/long-term-evoluti... > Whilst we feel that current vaccines are excellent for reducing the risk of hospital admission and disease, we propose that research be focused on vaccines that also induce high and durable levels of mucosal immunity in order to reduce infection of and transmission from vaccinated individuals. This could also reduce the possibility of variant selection in vaccinated individuals. Note the reference to transmission from vaccinated individuals. There was also a study of Vietnamese healthcare workers, showing that 70% of infections were pre-symptomatic, https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3897733 https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3897733 > 69 healthcare workers were tested positive for SARS-CoV-2. 62 participated in the clinical study. 49 were (pre)symptomatic ... Breakthrough Delta variant infections are associated with high viral loads, prolonged PCR positivity, and low levels of vaccine-induced neutralizing antibodies, explaining the transmission between the vaccinated people. Physical distancing measures remain critical to reduce SARS-CoV-2 Delta variant transmission.
- phonypc 5y ago
  None of this indicates the vaccines increase asymptomatic transmission. Yes, breakthrough cases can still transmit. Keyword can.
  - walterbell 5y ago
    70% pre-symptomatic transmission in healthcare workers with PPE is a bit more than can.

walterbell 5y ago

Let's look at the CDC website, https://www.cdc.gov/coronavirus/2019-ncov/vaccines/fully-vaccinated-guidance.html https://www.cdc.gov/coronavirus/2019-ncov/vaccines/fully-vac... > Based on evolving evidence, CDC recommends fully vaccinated people get tested 5-7 days after close contact with a person with suspected or confirmed COVID-19. For many people, this description could apply to daily activity, e.g. riding on public transit. So the CDC is recommended regular testing of vaccinated people. Since the vaccine can suppress symptoms, testing can be used to detect infection earlier, enabling isolation and/or treatments which only work early in the progression of Covid. In a July 2021 paper from academics advising UK SAGE, https://www.gov.uk/government/publications/long-term-evolution-of-sars-cov-2-26-july-2021 https://www.gov.uk/government/publications/long-term-evoluti... > Whilst we feel that current vaccines are excellent for reducing the risk of hospital admission and disease, we propose that research be focused on vaccines that also induce high and durable levels of mucosal immunity in order to reduce infection of and transmission from vaccinated individuals. This could also reduce the possibility of variant selection in vaccinated individuals. Note the reference to transmission from vaccinated individuals. There was also a study of Vietnamese healthcare workers, showing that 70% of infections were pre-symptomatic, https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3897733 https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3897733 > 69 healthcare workers were tested positive for SARS-CoV-2. 62 participated in the clinical study. 49 were (pre)symptomatic ... Breakthrough Delta variant infections are associated with high viral loads, prolonged PCR positivity, and low levels of vaccine-induced neutralizing antibodies, explaining the transmission between the vaccinated people. Physical distancing measures remain critical to reduce SARS-CoV-2 Delta variant transmission.

phonypc 5y ago
None of this indicates the vaccines increase asymptomatic transmission. Yes, breakthrough cases can still transmit. Keyword can.
- walterbell 5y ago
  70% pre-symptomatic transmission in healthcare workers with PPE is a bit more than can.