Statement on poliovirus and the international traveller
Bibliographic record
Abstract
INTRODUCTION: The World Health Organization declared the recent international spread of wild poliovirus a public health emergency of international concern on May 5, 2014. Temporary recommendations were issued to reduce the risk of further spread of the disease, focusing on countries currently exporting wild poliovirus and those with individuals infected with wild poliovirus but not exporting the virus to other countries. The purpose of this statement is to review the implications of the new temporary recommendations for Canadian travellers and to provide guidance for health care practitioners for the prevention of poliomyelitis (polio) in travellers from Canada. METHODS: This statement was developed by the Committee to Advise on Tropical Medicine and Travel (CATMAT) and is designed to complement the Canadian Immunization Guide, a comprehensive resource on immunization. CATMAT has taken into consideration both the need for protection and the potential for adverse effects of vaccination. BACKGROUND: Polio is a highly infectious, vaccine-preventable, viral disease. Though polio is asymptomatic in the majority of cases, in approximately 1% it attacks the central nervous system and leads to paralysis. EPIDEMIOLOGY AND RISK TO TRAVELLER: Canada was declared free of wild poliovirus in 1994 and cases since then have been associated with importations and very rarely (1 per 2.7 million doses) to vaccine-associated paralytic polio with the use of oral poliovirus vaccine. There is still a risk to travellers going to regions outside those in which polio has been eliminated. PREVENTION: Routine vaccination of children and adults is recommended in Canada. Complete information about polio vaccine recommendations in Canada is available in the most recent version of the Canadian Immunization Guide. Travellers should ensure that they are vaccinated against polio before travelling to countries where polio is known or suspected to be circulating.
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 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 | 0.002 | 0.007 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.007 | 0.008 |
| Insufficient payload (model declined to judge) | 0.009 | 0.003 |
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".