Amenorrhoea is a symptom with many potential causes. Primary amenorrhoea (menstrual cycles never starting) may be caused by developmental problems such as the congenital absence of the uterus, failure of the ovary to receive or maintain egg cells. Also, delay in pubertal development will lead to primary amenorrhoea.
Diseases transmitted by mosquitoes include: malaria, dengue, West Nile virus, chikungunya, yellow fever, filariasis, Japanese encephalitis, Saint Louis encephalitis, Western equine encephalitis, Eastern equine encephalitis, Venezuelan equine encephalitis, La Crosse encephalitis and Zika fever.
Chikungunya, Dengue Fever, Yellow Fever and Zika. Chikungunya, Dengue Fever, Yellow Fever and Zika are mosquito-borne diseases transmitted to humans by day-biting Aedes aegypti and Aedes albopictus mosquitoes (see pictures below). These mosquitoes, as of February 2016, are NOT present in Sutter County or Yuba County.