What is the shape of the bacteria Treponema pallidum?

Treponema pallidum is an aerobic, Gram-negative bacterium in the Spirochaetaceae family which is spiral in shape.

How do you identify Treponema pallidum?

This bacterium can be detected with special stains, such as the Dieterle stain. T. pallidum is also detected by serology, including nontreponemal VDRL, rapid plasma reagin, treponemal antibody tests (FTA-ABS), T. pallidum immobilization reaction, and syphilis TPHA test.

What does a syphilis rash look like?

The characteristic rash of secondary syphilis may appear as rough, red, or reddish brown spots both on the palms of the hands and the bottoms of the feet. However, rashes with a different appearance may occur on other parts of the body, sometimes resembling rashes caused by other diseases.

What does a chancre look like?

Primary Stage The appearance of a single chancre marks the primary (first) stage of syphilis symptoms, but there may be multiple sores. The chancre is usually (but not always) firm, round, and painless. It appears at the location where syphilis entered the body.

What bacteria is spiral?

Spiral-shaped bacteria occur in one of three forms: vibrio, spirillum, and spirochete (Fig.

Is Treponema pallidum a bacteria or virus?

Treponema pallidum, the bacteria that cause syphilis. Treponema pallidum, the bacteria that cause syphilis. Syphilis is a sexually transmitted disease (STD) caused by the bacterium Treponema pallidum. It is transmitted from person to person via direct contact with a syphilitic sore, known as a chancre.

What is pallidum test?

The FTA-ABS test is a blood test to detect antibodies to the bacteria Treponema pallidum, which causes syphilis. This test is used when a screening test for syphilis is positive to confirm that there is a true infection. The FTA-ABS becomes reactive 4-6 weeks after infection.

Where does pallidum live?

Endemic syphilis, caused by T pallidum subsp endemicum, is found in the desert areas of the Middle East and Central and South Africa. Transmission is through human-to-human nonsexual contact. Most cases are contracted by children past the age of two years.

Is syphilis a virus or bacteria?

Treponema pallidum, the bacteria that cause syphilis. Syphilis is a sexually transmitted disease (STD) caused by the bacterium Treponema pallidum. It is transmitted from person to person via direct contact with a syphilitic sore, known as a chancre.

What does syphilis look like on tongue?

During the first stage of infection, syphilis may appear as sores, known as chancres, on your lips, the tip of your tongue, your gums or at the back of your mouth near your tonsils. They start as small red patches and grow into larger, open sores that can be red, yellow or gray in color.

What color is a syphilis chancre?

Initially, in syphilis, a dusky red flat spot appears at the site of inoculation and is easily missed. Then, a painless ulcer (chancre) appears 18–21 days after initial infection. Genital sites in women affected are the cervix, vagina, vulva, and clitoris.

What color is syphilis discharge?

Foul-smelling, yellow-green vaginal discharge. Pain with intercourse and/or urination. Vaginal irritation and itching.