User:Arushidotcom/sandbox

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This is place to practice clicking the "edit" button and practice adding references (via the citation button). Please see Help:My sandbox or contact User_talk:JenOttawa with any questions.

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 * Note: Please use your sandbox to submit assignment # 3 by pasting it below. When uploading your improvements to the article talk page please share your exact proposed edit (not the full assignment 3).
 * Talk Page Template: CARL Medical Editing Initiative/Fall 2019/Talk Page Template

Assignment # 3
(Apologies. I could not get the citations to work, so I have relied on bullet points instead.)

1. Proposed Changes:

Current Article

In the ‘History’ section, the article states “[t]o date, 21 strains of the measles virus have been identified.[141]”

Change

“To date, the World Health Organization recognizes eight clades named A, B, C, D, E, F, G, and H. Twenty-three strains of the measles virus have been identified and designated within these clades. ”

ET-Very clear.

2. Rationale for Proposed Changes:

The source that accompanies the current, published statistic is a peer-reviewed article from May 1995. When referring to more recent, reliable sources, it has come to our attention that the World Health Organization in fact recognizes 23 measles genotypes. Therefore, the proposed change is oriented around rectifying this mistake. We also believe that there is value in elaborating on the various clades the World Health Organization recognizes.

ET-Well justified.

'''3. Varied Opinion About Change ''' While the World Health Organization recognizes 23 measles genotypes, several of the genotypes — B1, E, F, G1, D1 — appear to be extinct or inactive. These genotypes in particular have not been isolated for at least 15 years. Therefore, editors may not agree with increasing the number of strains recognized and would rather instead decrease the number. That being said, the World Health Organization is the overarching organization that establishes guidelines/criteria for designating new genotypes – so their statistics should be trusted.


 * Rota, P. A., D. A. Featherstone, and W. J. Bellini. "Molecular epidemiology of measles virus." Measles. Springer, Berlin, Heidelberg, 2009. 129-150.
 * World Health Organization. "New genotype of measles virus and update on global distribution of measles genotypes." Weekly Epidemiological Record= Relevé épidémiologique hebdomadaire 80.40 (2005): 347-351.

ET-Well thought out.

4. Critique of Source

The first source we encountered that revealed this discrepancy was in a chapter of the book Measles by PA Rota, DA Featherstone, and WJ Bellini. Books are a form of “expert opinion, which is ranked quite low on the hierarchy of evidence. Therefore, we looked for more reputable sources and thought a guideline/publication by the World Health Organization would be more appropriate. Unfortunately, PubMed did not show any systematic reviews or meta-analyses that cite this source – therefore, we were unable to use a source that was at the highest level in the hierarchy of evidence. However, the World Health Organization is still a trusted source. It would ideal if this source was published recently.


 * World Health Organization. "New genotype of measles virus and update on global distribution of measles genotypes." Weekly Epidemiological Record= Relevé épidémiologique hebdomadaire 80.40 (2005): 347-351.