You've Got What?
How infectious diseases are spread and simple and practical advice for preventing the spread of infection in the home and community
Human T-cell lymphotropic virus type 1 (HTLV-1) is a virus that infects a type of white blood cell called a T‐lymphocyte. HTLV-1 is a distant relative of the human immunodeficiency virus (HIV) which can cause acquired immunodeficiency syndrome (AIDS). HTLV‐1 does not cause AIDS.
HTLV‐1 is present in many areas including
In Australia, the virus has been found in many Aboriginal populations in Central Australia as well as the Kimberley region in Western Australia. In Central Australia up to 50% of adults in some Aboriginal communities have the virus. In non‐Aboriginal Australians the virus is very uncommon but sporadic cases have been reported
HTLV‐1 can be spread from an infected person through unprotected sex, by sharing contaminated needles, by blood transfusion, and from a mother to her child (mainly through prolonged breast feeding).
Overseas studies have found the overall risk of spread by breast feeding is 20%, but the risk increases from around 5% at 6 months to more than 30% if infants are breast fed longer than 12 months. A few infants are infected before or during birth.
HTLV‐1 cannot be spread through social contact with infected people such as hand shaking, hugging, kissing or drinking from the same glass, nor can it be spread by coughing.
The majority of HTLV‐1 infected individuals will have no symptoms.
Two diseases have been definitely associated with HTLV‐1:
Only a small proportion of people with HTLV‐1 will actually develop either of these two diseases.
People with HTLV‐1 infection may also have more severe infections with other organisms that cause disease, such as roundworm (strongyloidiasis) and scabies.
(time between becoming infected and developing symptoms)
Many years (10 to 40 years) before disease occurs.
(time during which an infected person can infect others)
Once a person has been infected with HTLV‐1 they remain infected for life and may be able to transmit the virus to others.
The diagnosis is made by the detection of antibodies to HTLV‐1 in a blood test, followed up by more specific tests to confirm the diagnosis.
No specific treatment is available for the HTLV‐1 virus, but treatment is available for some of the complications of the infection.
Information modified and reproduced with kind permission from Northern Territory Centre for Disease Control. HTLV-1 Factsheet for patients and health professions.