Bibliographic record
Abstract
What Is the Issue Congenital cytomegalovirus (cCMV) infection is a leading cause of childhood hearing loss. It is estimated that 85% to 90% of newborns infected with cCMV will not show any symptoms at birth. Of those newborns with cCMV infection who are asymptomatic at birth, 10% to 15% will go on to develop long-term symptoms, including vision loss, hearing loss, and developmental delays. What Did We Do? This brief provides a summary about newborn screening for cCMV in Canada, including whether screening is available for cCMV in each province and territory, and if so, whether screening is universal or targeted using publicly available information. What Did We Find? Currently in Canada, 4 provinces (Alberta, Saskatchewan, Manitoba, Ontario) have or are implementing universal newborn screening for cCMV. Three provinces (British Columbia, New Brunswick, Nova Scotia) have province-wide targeted screening programs that offer cCMV testing to newborns who fail newborn hearing tests or who have suspected cCMV as identified by a clinician. Current clinical guidance and practice remain mixed on whether targeted or universal newborn screening is recommended, with each having a different distribution of benefits and harms. cCMV infections can be detected using blood, urine, or saliva tests. Most universal newborn screening programs use dried blood spot tests, which are likely to produce false-negative results; saliva tests have a lower number of false-negative results but can result in a higher number of false-positives. Some programs recommend additional testing using a different method (either saliva or urine) after an initial positive test as a validation. What Does This Mean? As both universal and targeted newborn screening programs have been adopted by several jurisdictions in Canada, there is wide recognition that cCMV infection is a serious health issue and that early detection is important. Moreover, there is an opportunity to generate data and evidence about test performance and program impact over time that could support future decision-making. As evidence and new test and treatment options become available, such data will help to inform the type of newborn screening approach used for cCMV.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".