A live attenuated (weakened) viral vaccine for yellow fever. Yellow fever vaccination is recommended for people traveling to or living in the tropical areas in the Americas and Africa where yellow fever occurs. Because yellow fever vaccination is a live vaccine, it should not be given to infants or people with immune-system problems.
- Yellow jack
1) The flag displayed from lazarettos, naval hospitals, and vessels in quarantine. 2) Synonym for yellow fever as, for example, in “…Fernando passed a few weeks recovering from a touch of yellow jack.”
- Yellow jacket sting
A sting from a yellow jacket (or other large stinging insects such as bees, hornets and wasps) can trigger allergic reactions ranging from local responses of limited duration to catastrophic general reactions which can be fatal. The susceptibility to severe reactions appears inherited. Avoidance and prompt treatment are essential. Immediate treatment is with adrenaline by […]
- Yerba mate
A stimulant beverage similar to tea, very popular in South America, brewed from the dried leaves and stemlets of a member of the holly family known botanically as Ilex paraguayensis. Despite claims to the contrary, Yerba mate does contain caffeine although the level is relatively low compared to coffee or tea. Yerba mate also contains […]
A group of bacteria that appear rod-like under the microscope and include Yersinia pestis (the cause of the bubonic and pneumonic plague), Yersinia entercolitic a (the cause of a disease called yersinosis), and Yersinia pseudotuberculosis (which causes a condition called mesenteric adenitis, particularly in immunocompromised patients). Both Y. entercolitica and Y. pseudotuberculosis have also been […]
- Yersinia enterocolitica
Use separate cutting boards for meat and other foods. Carefully clean all cutting boards, counter-tops, and utensils with soap and hot water after preparing raw meat. Dispose of animal feces in a sanitary manner.