Glossary of HIV/AIDS Related Terms
(Starting with "W")
By
AIDSinfo,
Glossary of HIV/AIDS Related Terms, 5th Edition, AIDSinfo,
October 2005
ContactUs[at]aidsinfo.nih.gov
http://aidsinfo.nih.gov
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WIHS
See: Women's Interagency
HIV Study
Wasting Syndrome
The involuntary loss of more than 10 percent of body
weight, plus more than 30 days of either diarrhea or
weakness and fever. Wasting refers to the loss of muscle
mass, although part of the weight loss may also be due
to loss of fat. HIV-associated wasting syndrome is considered
an AIDS-defining condition.
Western Blot
A laboratory technique used to detect a specific protein.
A Western blot test to detect HIV proteins in the blood
is used to confirm a positive HIV antibody test (ELISA).
See Also: Enzyme-Linked
Immunosorbent Assay
White Blood Cells
Also known as leukocytes. These cells make up the immune
system and include lymphocytes, monocytes, neutrophils,
eosinophils, macrophages, and mast cells. White blood
cells are made by bone marrow and help the body fight
infection and other diseases.
Wild-Type Virus
A term to describe virus strains (including strains
of HIV) that have not acquired any genetic mutations
that create special characteristics, such as resistance
to particular drugs.
Window Period
The time period between a person's infection with HIV
and the appearance of detectable anti-HIV antibodies.
Because antibodies to HIV take some time to form, an
HIV antibody test will not be positive immediately after
a person is infected. The time delay typically ranges
from 14 to 21 days, but varies for different people.
Nearly everyone infected with HIV will have detectable
antibodies by 3 months after infection.
See Also: Enzyme-Linked
Immunosorbent Assay
Antibody
Women's Interagency HIV Study
(WIHS)
A multicenter study established in 1993 to research
the impact of HIV infection in women. The study’s
ultimate goal is to gain a better understanding of and
provide adequate support for women who are currently
HIV infected or who are at risk for HIV infection. The
study is jointly supported by the National Institutes
of Health (NIH) and the Centers for Disease Control
and Prevention (CDC).
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