Microceffali: Gwahaniaeth rhwng fersiynau

Wedi i'r [[Unol Daleithiau America]] ffrwydro bomiau atomig ''"Little Boy"'' ar [[Hiroshima]] a ''"Fat Man"'' ar [[Nagasaki]], esgorodd nifer o ferched ar blant a oedd yn dioddef o microceffali.<ref>{{cite web|url=http://www.pcf.city.hiroshima.jp/kids/KPSH_E/hiroshima_e/sadako_e/subcontents_e/13kousyougai_1_e.html#|title=Aftereffects|publisher=}}</ref> Microceffali yw'r unig 'afiechyd' genynnol a ganfyddwyd ym mhlant Hiroshima a Nagasaki.<ref name="books.google.ie">{{cite web|url=http://books.google.ie/books?id=DykKlVU0V-oC&pg=PA21&lpg=PA21&dq=microcephaly+hiroshima&source=bl&ots=eqT78xHiCX&sig=9bckWb7x6IsnUC6lhvsa_QTfZ04&hl=en&ei=OGtqTsG9NYTX8gOL3cwk&sa=X&oi=book_result&ct=result&resnum=3&ved=0CCoQ6AEwAg#v=onepage&q=microcephaly%20hiroshima&f=false|title=Teratology in the Twentieth Century Plus Ten|publisher=}}</ref><ref name="books.google.ie"/> Yn Ionawr 2016 credid bod cysylltiad rhwng y [[firws Zika]] (a achosodd [[Epidemig y feirws Zika|Epidemig 2015-2016]] a phlant a anwyd gyda microceffali. Cludir y feirwsfirws i ferched beichiog gan y [[mosgito]] [[Aedes aegypti]] ac eraill a thrwy [[cyfathrach rywiol|ryw]].<ref>{{cite web |title=Zika virus - Brazil: confirmed Archive Number: 20150519.3370768 |website=Pro-MED-mail |url=http://www.promedmail.org/direct.php?id=3370768 |publisher=International Society for Infectious Diseases}}</ref><ref>{{cite web| url=http://www.cdc.gov/media/releases/2016/s0315-zika-virus-travel.html| title=CDC issues interim travel guidance related to Zika virus for 14 Countries and Territories in Central and South America and the Caribbean| publisher=[[Centers for Disease Control and Prevention]]| date=2016-01-15| accessdate=2016-01-17}}</ref><ref>{{cite web| url=http://arstechnica.co.uk/science/2016/01/cdc-issues-travel-advisory-for-14-countries-with-alarming-viral-outbreaks/|title=CDC issues travel advisory for 14 countries with alarming viral outbreaks]|author=Beth Mole|publisher=[[Condé Nast]]|work=[[Ars Technica]]|date=2016-01-17|accessdate=2016-01-17}}</ref>