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1. the color produced by stimulation by light waves of wavelength of 571.5 to 578.5 mμ.
2. a color between orange and green, produced by energy of wavelengths between 570 and 590 nm.
3. a dye or stain with this color.
yellow fever an acute infectious type of hemorrhagic fever, transmitted by the female of certain species of mosquitoes, and characterized by fever, jaundice due to necrosis of the liver, and albuminuria. It is less rampant today than previously, largely because of vaccination and better control of the mosquitoes, but it is still a danger in most tropical countries. Among native inhabitants who contract the disease there is a mortality rate of about 5 per cent. In visitors from other climates, fatalities once ran as high as 40 per cent but are now much lower. With proper immunization precautions, a visitor from a temperate country today takes only a minimal risk.

The mosquito that transmits classic yellow fever is Aedes aegypti. In the jungles of Brazil and in parts of Africa, in the absence of Aedes aegypti, the disease may be carried by a different mosquito species that lives in treetops. These forest mosquitoes can communicate the disease to forest workers and also to certain animals, such as monkeys and marmosets, which then serve as virus reservoirs and as sources of reinfection for humans. This form of the disease is called jungle or sylvan yellow fever, and it is difficult to control because of the virtual impossibility of eradicating the tree-inhabiting mosquitoes.
Symptoms and Treatment. Yellow fever has an incubation period of 3 to 6 days. It then manifests suddenly and intensely with fever, headache, muscular aches, and prostration. A few days later, the temperature suddenly falls, only to rise again. The pulse is originally very rapid, but then slows gradually to less than 50 beats per minute. In addition to the characteristic yellowing of the skin, the urine becomes darker. There may be frequent vomiting, and blood may become noticeable in the vomitus (so-called “black vomit”). There may also be bleeding from the mucous membranes.

The disease runs its course in a little more than a week. Those who survive suffer no permanent damage. The jaundice completely disappears. Furthermore, these persons are immune from a second attack. In fatal cases, death is usually due to liver, myocardial, or kidney failure.

There is no specific drug for the cure of yellow fever. The effects of the disease can be mitigated by analgesics, sedatives, bed rest, and a high-calorie, high-carbohydrate diet.
Patient Care. The patient's fever is controlled with cold or tepid sponges and other measures to lower body temperature (see fever). The diet consists of liquids and easily digested foods until the vomiting stops, and then is gradually increased. The patient's bed and room should be well screened to prevent transmission of the fever to others via mosquitoes.
visual yellow all-transretinal.


A color occupying a position in the spectrum between orange and green. For individual yellow dyes see specific name.
[A.S. geolu]


/yel·low/ (yel´o)
1. a color between orange and green, produced by energy of wavelengths between 570 and 590 nm.
2. a dye or stain with this color.
Drug slang A regionally popular term for LSD or depressants
Quackery A colour that combines red’s energising effects and green’s tonic properties, allegedly stimulating immunity and cleansing the skin and intestines. Yellow is said to be most useful for arthritis, hepatitis, jaundice, rheumatism, stiffness
Physics A primary colour, which has a wavelength of 571.5–578.5 nm


Physicians Desk Reference A book published annually that lists all ± 2500 US therapeutics requiring a physician prescription
PDR 7 color-coded sections
White Manufacturers' index, containing the company addresses and list of products
Pink Product name index, an alphabetical listing of the drugs by brand name
Blue Product classification, where drugs are subdivided into therapeutic classes
Yellow Generic and chemical name index
Multicolored Photographs of the most commonly prescribed tablets and capsules
White Product information, a reprint of the manufacturers' product inserts and
Green Diagnostic product information, a list of manufacturers of diagnostic tests used in office practice and the hospital; Cf Over-the-counter drugs  . ;.


(Y, Yel) (yel'ō)
A color occupying a position in the spectrum between orange and green.
[A.S. geolu ]


One of the hues of the visible spectrum evoked by stimulation of the retina by wavelengths situated in a narrow region between about 560 and 590 nm, i.e. between red and green. The complementary colours to yellow are blues.


1. the primary color produced by stimulation by light waves of wavelength of 571.5 to 578.5 nm.
2. a dye or stain that produces a yellow color.

Patient discussion about yellow

Q. My 11 y/o son eyes appear to have a slight yellow in the whites toward the corners. I am assuming he will need blood work, but does anyone have any idea what may be the cause?

A. If it's not a spot, but rather a diffuse color, it may be jaundice - high levels in the blood of a substance called bilirubin (

If your child is generally healthy, and this change appeared without any overt problem (e.g. liver disease or blood problem), or your child had fever or fasted recently, this jaundice may represents Gilbert syndrome. It's a syndrome of slightly elevated levels of bilirubin, and considered not dangerous.

You may read more here:

Q. husband has horrible rash bil. below knees to his ankles. it is bright red yellow weeping cracks. On statins He has been on zocor for 15 years and we are so afraid this may have something to do with this drug. He has stopped taking the drug because the pain and weakness, and numbness in his legs is considerable

A. i looked up for side effects and i saw only "eczema" as a skin side effect. but it seems odd to me that after 15 years you got this kind of side effect. it should have appeared years ago. you know- it might be a very good idea to go and see a Dr... and not stopping a medication without warning..

More discussions about yellow
References in periodicals archive ?
They got yellow from me, and I felt yellow giving it to them.
Africans do not possess an innate immunity [to yellow fever] but those populations living in infected areas first touched by European seafarers surely enjoyed a high level of protection, presumably an immunity acquired during childhood when the disease is relatively less severe.
In Brazil from 1980 to 1998, 376 cases of jungle yellow fever were laboratory confirmed (by virus isolation, with or without immunoglobulin [Ig]M-capture enzyme-linked immunosorbent assay [MAC-ELISA] and immunoperoxidase stain), with 216 deaths (case-fatality rate 57.
s newest garden bulbs include Tripartite, a daffodil with two to four fragrant yellow flowers per stem; Snow Crystal, a snow-white Dutch Hyacinth; Viking, a flamed scarlet, long-lasting peony-flowered tulip; and lily-flowered tulips Sapporo, with pale yellow petals, and Dyanito, a rare blood-red flower.
The 1994 yellow book continues to incorporate American Institute of CPAs field work standards by reference.
In those days the farm's silver maples got more of my attention, what with their 'helicopter" samaras to set sailing on the wind and wide branches where a six year-old could hide from farm chore But I was fascinated by the yellow poplar's tulip-shaped leaves, the firs to turn color-a brilliant yellow-in fall.
Paradise Media Group publishes The Paradise Yellow Pages, which has offered low advertising rates and special features to businesses on the Hawaiian Islands since May, 2000.
It is reasonable to suggest that the same situation pertains in the case of yellow fever.
In Nigeria, systematic investigation of yellow fever vaccine distribution and transportation to remote locations has found loss in vaccine potency.
The GAO is seeking comments on an exposure draft containing these and other proposed changes to the yellow book.
Whether replacing a broken windshield or repairing a cracked window in your home, it is clear the Yellow Pages help Americans solve their glass needs.
Thus, while the new SASs were being finalized, the GAO was revising GAGAS, as set forth in its yellow book.