Y gwahaniaeth rhwng diwygiadau o "COVID-19"

Ychwanegwyd 11 beit ,  blwyddyn yn ôl
dim crynodeb golygu
:''Erthygl am yr haint a achoswyd gan SARS-CoV-2 yw hon.''
:''Am y firws penodol a achosodd yr epidemig, gweler [[SARS-CoV-2]].''
:''Am y grwpgrŵp o erthyglau mae'r firws yn perthyn iddo, gweler: [[CoronafirwsCoronafeirws (grwpgrŵp o firwsfirysau)|Coronafirysau]]
:''Am y pandemig cyfoes, gweler yr erthygl [[Pandemig COVID-19]].''
 
[[Haint|Clefyd heintus]] a ddaeth i'r amlwg yn [[Rhagfyr]] [[2019]] yw '''COVID-19''' sy'n fyr am "'''''Co'''''rona'''''vi'''''rus '''''d'''''isease 2019"; bathiad Cymraeg - '''y Gofid Mawr'''<ref>[https://twitter.com/DilywCymru/status/1242539372295135233 trydariad gan Dilyw 25 Mawrth 2020]</ref>. Gellir olrhain yr achos cyntaf nôl i 17 Tachwedd 2019 yn Hubei.<ref name="tracedback">{{Cite web|last=Ma|first=Josephine|date=13 March 2020|title=Coronavirus: China's first confirmed Covid-19 case traced back to November 17|url=https://www.scmp.com/news/china/society/article/3074991/coronavirus-chinas-first-confirmed-covid-19-case-traced-back|url-status=live|archive-url=https://web.archive.org/web/20200313004217/https://www.scmp.com/news/china/society/article/3074991/coronavirus-chinas-first-confirmed-covid-19-case-traced-back|archive-date=13 Mawrth 2020|access-date=28 Mai 2020|website=[[South China Morning Post]]|language=en}}</ref> Y [[firws]] sydd wrth wraidd yr haint yw'r [[SARS-CoV-2]], ac wrth i'r clefyd yma ymledu drwy'r byd, esgorodd ar [[Pandemig coronafirws 2019–20|bandemig coronafirwscoronafeirws 2019–20]]. Erbyn 30 Mehefin 2020 roedd dros 1,500 [[Y Gofid Mawr (COVID-19) yng Nghymru|wedi marw yng Nghymru]], dros 43,500 drwy wledydd Prydain a dros 505,000 yn fyd-eang.<ref>[https://coronaviruscymru.wales/graphs-%26-timeline coronaviruscymru.wale; adalwyd 7 Ebrill 2020.</ref><ref>[https://www.who.int/emergencies/diseases/novel-coronavirus-2019 www.who.int ;] adalwyd 7 Ebrill 2020.</ref>.
[[File:20200327 - Rail Delivery Group - Coronavirus.webm|bawd|Canllaw ar wefanauwefannau trenau; 27 Mawrth 2020.]]
 
CanfyddwydCanfuwyd y clefyd yn gyntaf yn 2019 yn [[Wuhan]], [[Tsieina]], ac ers hynny mae wedi lledaenu’n fyd-eang, gan arwain at [[pandemig|bandemig]].
 
Mae symptomau cyffredin yn cynnwys [[twymyn]] (gorboethi, [[peswch]] ac anhawster anadlu, gyda phoen yn y [[cyhyrau]], [[fflem]] ac fel arfer, [[dolur gwddf]]. Er bod mwyafrif yr achosion yn arwain at symptomau ysgafn, mewn rhai achosion ceir [[niwmonia]] difrifol ac organnauorganau'r corff yn methu.<ref name="whoqa">{{cite web |url=https://www.who.int/news-room/q-a-detail/q-a-coronaviruses| title= Q&A on coronaviruses (COVID-19) |url-status=live |access-date=11 Mawrth 2020 |publisher=[[Cyfundrefn Iechyd y Byd]] }}</ref><ref>{{Cite news |url=https://www.nytimes.com/2020/02/27/world/asia/coronavirus-treament-recovery.html |title=Most Coronavirus Cases Are Mild. That's Good and Bad News. |first=Vivian |last=Wang |name-list-format=vanc |date=5 Mawrth 2020 |work=[[The New York Times]] }}</ref><ref name="WHO-q-a">{{Cite web |url=https://www.who.int/news-room/q-a-detail/q-a-coronaviruses |title=Q&A on coronaviruses |website=[[Cyfundrefn Iechyd y Byd]] |url-status=live |archive-url=https://web.archive.org/web/20200120174649/https://www.who.int/news-room/q-a-detail/q-a-coronaviruses |archive-date=20 Ionawr 2020 |access-date=27 Ionawr 2020 |name-list-format=vanc }}</ref><ref name="Hui14Jan2020">{{cite journal |vauthors=Hui DS, I Azhar E, Madani TA, Ntoumi F, Kock R, Dar O, Ippolito G, Mchugh TD, Memish ZA, Drosten C, Zumla A, Petersen E |display-authors=6 |title=The continuing 2019-nCoV epidemic threat of novel coronaviruses to global health – The latest 2019 novel coronavirus outbreak in Wuhan, China |journal=Int J Infect Dis |date=Chwefror 2020 |volume=91 |pages=264–66 |pmid=31953166 |doi=10.1016/j.ijid.2020.01.009 |doi-access=free }}</ref>
 
Mae cyfradd y marwolaethau allan o'r holl achosion a ddiagnosiwyd ar gyfartaledd yn 3.4%. Ceir cryn amrywiaeth, gyda 0.2% yn y rhai iau nag 20 oed, i oddeutu 15% yn y rhai dros 80 oed.<ref name="worldometers.info">{{Cite web |url=https://www.worldometers.info/coronavirus/coronavirus-death-rate/ |title=Wuhan Coronavirus Death Rate |website=www.worldometers.info |url-status=live |archive-url=https://web.archive.org/web/20200131223143/https://www.worldometers.info/coronavirus/coronavirus-death-rate/#ref-6 |archive-date=31 Ionawr 2020 |access-date=2 Chwefror 2020 |name-list-format=vanc }}</ref><ref>{{Cite web |url=https://www.imperial.ac.uk/media/imperial-college/medicine/sph/ide/gida-fellowships/Imperial-College-2019-nCoV-severity-10-02-2020.pdf |title=Report 4: Severity of 2019-novel coronavirus (nCoV) |url-status=live |archive-url=https://web.archive.org/web/20200210105717/https://www.imperial.ac.uk/media/imperial-college/medicine/sph/ide/gida-fellowships/Imperial-College-2019-nCoV-severity-10-02-2020.pdf |archive-date=10 Chwefror 2020 |access-date=10 Chwefror 2020 |name-list-format=vanc }}</ref> Fel arfer, mae'r haint yn cael ei ledaenu o un person i'r llall trwy ddefnynnau heintus yn cael eu hanadlu, ee drwy besychu neu disian. Mae'r amser rhwng dod i gysylltiad â symptomau a'r symtomau'nsymptomau yn ymddangos, yn gyffredinol, rhwng dau a 14 diwrnod, gyda phum diwrnod ar gyfartaledd.<ref name="WHO2020QA">{{Cite web |url=https://www.who.int/news-room/q-a-detail/q-a-coronaviruses |title=Q&A on coronaviruses |website=[[Cyfundrefn Iechyd y Byd]] |date=11 Chwefror 2020 |access-date=24 Chwefror 2020 |archive-url=https://web.archive.org/web/20200120174649/https://www.who.int/news-room/q-a-detail/q-a-coronaviruses |archive-date=20 Ionawr 2020|url-status=live |quote=The disease can spread from person to person through small droplets from the nose or mouth which are spread when a person with COVID-19 coughs or exhales ... The main way the disease spreads is through respiratory droplets expelled by someone who is coughing.|name-list-format=vanc }}</ref><ref>{{Cite web |url=https://www.cdc.gov/coronavirus/2019-ncov/about/symptoms.html |title=Symptoms of Novel Coronavirus (2019-nCoV) |date=10 Chwefror 2020 |publisher=[[Centers for Disease Control and Prevention]] |access-date=11 Chwefror 2020 |archive-url=https://web.archive.org/web/20200130202038/https://www.cdc.gov/coronavirus/2019-ncov/about/symptoms.html |archive-date=30 Ionawr 2020 |url-status=live }}</ref>
[[Delwedd:14 Hegasy COVID-19 Q CY.svg|bawd|canol|680px]]
==SymtomauSymptomau==
 
{| class="wikitable" style = "float:right; margin-left:1em; text-align:center"
|+ style="text-align: center;" | Cyfradd y symptomau<ref name="WHO report 28 February 2020">{{cite document |title=Report of the WHO-China Joint Mission on Coronavirus Disease 2019 (COVID-19) |url=https://www.who.int/docs/default-source/coronaviruse/who-china-joint-mission-on-covid-19-final-report.pdf |vauthors=((Cyfundrefn Iechyd y Byd)) |pages=11–12 | access-date=5 Mawrth 2020 |name-list-format=vanc }}</ref>
! Symptomau
! Symtomau
! Canran
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[[Delwedd:5 Cam Syml Welsh Gov and NHS Wales OGL.png|bawd|Cyfarwyddiadau dwyieithog gan Lywodraeth Cymru a GIG ar sut i ddeilio gyda'r fferyllydd.]]
 
Mae symptomau plant yn llawer mwynachmwynnach. Dangosodd adroddiad gan Ganolfan Tsieineaidd ar gyfer Rheoli ac Atal Clefydau, fod un o bob pedwar plentyn a brofodd yn bositif yn parhau heb unrhyw symtomsymptom, ar wahân i symtomausymptomau mwyn, megis peswch, 'erythema ffaryngeall' a thwymyn.<ref name="Lu Zhang Du Zhang p. ">{{cite journal |vauthors=Lu X, Zhang L, Du H, Zhang J, Li YY, Qu J, Zhang W, Wang Y, Bao S, Li Y, Wu C, Liu H, Liu D, Shao J, Peng X, Yang Y, Liu Z, Xiang Y, Zhang F, Silva RM, Pinkerton KE, Shen K, Xiao H, Xu S, Wong GW |display-authors=6 |title=SARS-CoV-2 Infection in Children |journal=New England Journal of Medicine |publisher=Massachusetts Medical Society |date=18 Mawrth 2020 |doi=10.1056/nejmc2005073 |page= }}</ref>
 
==Atal yr haint==
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