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Sexually Transmitted Disease (STD)
A group of communicable diseases that are transmitted predominantly by sexual contact and caused by a wide range of bacterial, viral, protozoal, fungal agents and Ecto parasites.
Ecto parasite
parasite outside
Endo parasite
parasite inside
Prostitution
Broken homes
Sexual disharmony
Easy money
Emotional immaturity
Urbanization
International travel
Changing behavioral patterns
Alcoholism
Social Factors
Sexual intercourse (vaginal, anal, oral)
Blood-to-blood contact
Sharing needles or other drug equipment
Tattoo or body piercing
Infected mother to her baby
Methods of Transmission
BACTERIAL AGENTS
VIRAL AGENTS
PROTOZOAL AGENTS
FUNGAL AGENTS
ECTOPARASITES
Classification of Sexually Transmitted Agents
Gonorrhea
Chlamydia Trachomatis
Haemophilus ducreyi
Shigella
Bacterial Agents:
Gonorrhea
cervix, urethra, rectum, throat, and occasionally, the eyes
o Ciproflaxin
o Ceftrioxone
o Cefixine
o Septinomycin
Major cause of morbidity among sexually active individuals worldwide
Major cause of cervicitis in women
Can affect the ___
Can be treated with antibiotics: ___
Often NO symptoms, especially in females
Neisseria gonorrhoeae
Causative agent of Gonorrhea
Gonococcal Ophthalmia Neonatorum
occurs when a newborn is infected with neisseria gonorrhoeae during birth
“eye infection”
Profuse, purulent conjunctival discharge, frequently bilateral
When left intreated, may lead to blindness
Cervicitis
yellowish to greenish
Inflammation of the uterine cervix
Can be classified as infectious or non-infectious, acute or chronic
Clinically important because it left untreated, it may ascend and cause endometritis or pelvic inflammatory disease
Discharge may be _______
Chlamydia trachomatis
: Doxicycline, Azithromycin, Amoxycillin, Ofloxacin, Erythromycin or Tetracycline
Individuals may not exhibit clinical manifestations
The symptoms mimic like gonorrhea
It can result in vertical transmission to the fetus
The drug of choice include:
Haemophilus ducreyi
· Transmitted through direct contact with open lesions and exudates from lymph nodes during sexual intercourse
: Treatment : Antibiotics
SHIGELLA
_ can be passed from poop or unclean fingers of one person to the mouth of another person
Also transmitted through direct sexual contact like Anal, oral sex or anal play (rimming, fingering)
Causes fever, diarrhea, and stomach cramps
To avoid contracting it, wash your hands with soap and water before doing things like preparing food or engaging in sexual activity as well as after using the bathroom.
Hepatitis B Virus
Human Papilloma Virus
HIV
Viral Agents:
Hepatitis B Virus
· Transmission has thus been associated with sexual contact, blood transfusions, sharing of needles and syringes by intravenous drug users, tattooing, and occupational needle-stick injury
Human Papilloma Virus
· Causes genital warts, which vary from the common soft, flesh colored protuberances which may become exuberant (cauliflower like) to popular flat warts on drier areas (shaft of the penis)
· Can cause cervical cancer in women
HIV
Transmission occurs by one of three major routes: Intimate sexual contact, contact with blood or body fluids, perinatally from infected mother to infant
Stage 1: Acute HIV infection
Stage 2: Chronic HIV infection
Stage 3: Acquired Immunodeficiency Syndrome(AIDS)
HIV Staging
Stage 1: Acute HIV infection
- People have lot of HIV in their blood
- Some people have flu like symptoms
- Only Antigen/antibody tests or nucleic acid test (NATs) can diagnose acute infection
Stage 2: Chronic HIV infection
- Aka Asymptomatic HIV/clinical Latency
- HIV is still active but reproduces at very low levels
- People can transmit HIV at this phase
- People who take HIV medicine as prescribe may never move into stage 3
Stage 3: AIDS
- The most severe phases of HIV infection
- People with _____ have such badly damaged immune systems that they get an increasing number of sever illnesses, called opportunistic infections
- Without treatment, people with ____ typically survive about 3 years
- Combination Antiretroviral Therapy (CART), High Active Antiretroviral Therapy (HAART)
- Staphylococcus aureus
Molluscum contagiosum
· Raised, round skin colored bumps. Bumps with a small dent or dot at the top near the center
· The infection usually resolves itself but treatment can shorten the length of symptoms
PREVENTION: Good hygiene, Do not share towels or clothing, wash hands thoroughly, avoid skin to skin contact, abstinence from sex
Entamoeba histolytica
Giardia lamblia
Trichomonas vaginalis
Protozoal Agents:
Entamoeba histolytica
· Only pathogenic amoeba
· MOT: Ingestion of food and water contaminated with the cysts
· The typical manifestation of intestinal amoebiasis is amoebic dysentery(blood stool)
· Hepatic involvement is the most common extraintestinal complication of amoebiasis
· Involvement of the CNS leads to Secondary Amoebic Meningoencephalitis
Giardia lamblia
· Appearance: Old man with eye glasses
· MOT: Person to person contact. Ingestion of contaminated water
Giardiasis
- aka “beaver fever”(muskrat, beaver, watervoules) , is a condition caused by a parasitic intestinal infection, which results in uncomfortable symptoms that affect the digestive system
Trichomonas vaginalis
· Aka Ping-Pong disease
· This parasitic infection leads to vaginitis and vaginal discharge in women
· The most common infection site in males is the prostate gland region and the epithelium of urethra
· Asymptomatic cases most frequently in men; symptomatic men often experience persistent or recurring urethritis.
· Can live for more than 24 hours in urine, 6 hours on toilet seat
Metronidazole/Tinidazole
Treatment of Trichomonas vaginalis
Petechial hemorrhage (strawberry mucosa)
Metaplastic changes
Desquamation of the vaginal epithelium
Causes of Trichomonas vaginalis
Candida albicans
Fungal Agents:
Candida albicans
· Sometimes causes a mild yeast infection
· Can get into bloodstream and cause severe illness
-Most opportunistic infection in the world
Candidiasis
causes oral or vaginal rush
It also causes irritation, discharge and intense itchiness of the vagina and the vulva
Phthirus pubis
Sarcoptes scabiei
Ectoparasites:
Phthirus pubis
· Aka Pubic lice or Crab louse
· Causes itching around your genitals or back passage
· Tiny blue spots around your genitals
· The lice or eggs of it are visible on your pubic hair
· If left untreated, the affected are will continue to itch and may result in serious skin infections
· Treatment: Over the counter prescription (lice killing lotion containing 1% permethrin or a mouse containing pyrethrins and piperonyl butoxide
Sarcoptes scabiei
· ___ is not an infection(inside) but an infestation(outside)
· Causes itching, sores, thick crusts on the skin
· Transmitted by prolonged skin to skin contact
· Scabies mites burrow, or tunnel under the outer layer of skin
· There mites lat eggs under the skin and feed on blood
· The mites are about the size of a pinhead, are nearly transparent, and usually cannot be seen
· Crusted Scabies-Occurs only when the scabies is already severe
Initial planning
Intervention Strategies
Support Components
Monitoring and Evaluation
Control of Sexually Transmitted Disease