Striving for universal birth dose hepatitis B vaccination in Canada: data from Ontario make a compelling case
Bibliographic record
Abstract
In 2009, the World Health Organization called for global universal birth dose hepatitis B virus (HBV) vaccination; however, in Canada, five provinces still vaccinate adolescents. The National Advisory Committee on Immunization (NACI) recommends province-to-province assessment of local epidemiology and states that if there is a failure of the routine immunization program, as indicated by HBV infection occurring in infants and children awaiting vaccination, that changes should be made. It has now been shown in Ontario that children under the age of 12 who are born in Canada are acquiring HBV prior to adolescent vaccination. In regions where birth dose vaccination was implemented decades ago, there is a lower adult HBV prevalence. In addition, birth dose vaccination has been shown to be cost-effective in Canada. With these data, we strongly encourage NACI to provide a uniform Canadian recommendation, for provincial public health policymakers to move to universal birth dose vaccination, and for providers to offer universal vaccination accross Canada.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.008 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.006 |
| Science and technology studies | 0.005 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.005 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".