Skip to main content

Breakthrough Events, Ages 5 to 11

By August 16, 2022Commentary

There are a series of posts coming on the age group results for breakthroughs.  In general you will see very limited evidence of effectiveness against infection from vaccines and stronger evidence of protection against serious disease, particularly in older adults.

Dave’s notes:

  1. The following charts illustrate the Covid cases and hospitalizations for the 5-11 age group. The Minnesota Department of Health (MDH) does not publish breakthrough death data or booster data for the 5-11 age group.
  2. This post is an update of the breakthrough charts for the 5-11 age group most recently published on 7/25/2022 here:
  3. There are 6 charts in this set, 3 charts each for cases and hospital admissions. Each set of 3 charts consists of the actual events per week (cases or admissions); the rate per 100k each week, and the proportion of events compared to the proportion of the vaccinated or unvaccinated population.
  4. Fig. 1: This chart plots the cases in the 5-11 age group per week among the unvaccinated and vaccinated but not boosted populations each week. The number of Covid cases among the vaccinated and unvaccinated groups continue to be very similar, with the number of unvaccinated cases being slightly higher than vaccinated cases.
  5. Fig. 2: This chart displays the case rates per 100k for each subgroup in the 5-11 age group. The vaccinated case rate equals or exceeds the unvaccinated case rate each week since 12/26/2021, although in recent weeks the case rates are very similar.
  6. Fig. 3: This chart displays the proportion of the 5-11 population who are unvaccinated (solid blue) and vaccinated but not boosted (solid green). For each population group we also display the proportion of cases each week (dashed lines of same color). The way to interpret this chart is to compare the proportion of breakthroughs to the proportion of vaccinations for each group. Whenever the dashed breakthrough proportion line is below the solid vaccination line of the same color, then that category is underrepresented for population, and that vaccination status might be said to be beneficial. For the week of 7/17/2022, 39% of this age group was vaccinated (solid green line) while this group accounted for 42% of the cases (dashed green line). We would interpret this to show that being vaccinated did not reduce an individual’s chances of testing positive for Covid for that week. At no point in the pandemic (except the first several weeks of vaccination) does vaccination show a material benefit for testing positive for Covid for this age group.
  7. Fig. 4-6: These charts display the hospital admissions, hospital admission rates per 100k, and hospital admissions proportions for the 5-11 age group, in an identical format to the case charts in Fig. 1 through Fig. 3. The vaccinated have generally had lower numbers of admissions throughout the pandemic than the unvaccinated, but the week of 7/17/2022 the vaccinated had more admissions (Fig. 4). The admissions rate per 100k for the vaccinated is higher than the rate for the unvaccinated the week of 7/17/2022 as well  (Fig. 5). Fig. 6 shows that the small number of admissions makes it difficult to compare the proportion of admissions to the proportion of vaccinations. Generally it appears that being vaccinated does reduce the rate of admissions.
  8. All data is obtained from the Minnesota Department of Health (MDH) Vaccine Breakthrough Weekly Update web site A data file on this site, vbtpedscirates.xlsx, contains all of the age group data.
  9. MDH defines the fully vaccinated (what we have termed vaccinated but not boosted) as those who have not received a booster after completing their primary vaccination series, and had been vaccinated at least 14 days prior to testing positive.

Leave a comment