Std Lecture Flashcards
What is VD?
Venereal diseases
What is STD?
Sexually transmissible diseases
What is STI?
Sexually transmissible infections
Incubation period of syphillis
9-90 days
Incubation period of HHV-2
3-7days
Incubation period of gonorrhea
1-5 days
Incubation period of chancroid
1-7 days
Incubation period of genital warts
1-6 months
Incubation period of AIDS
3months- 15yrs
Incubation period of LGV
1-5 wks
Incubation period of nongonococcel urethritis (NGV)
1-4 wks
Causative organism of trichomoniaisis
Trichomonas vaginalis
Incubation period of trichomomiasis
2-28 days
Causative organism of syphillis
Treponema pallidum
Causative organism of candidiadis
Candida albicans
Incubation period of candidiasis
1-4 wks
Causative organism of gonorrhea
Neisseria gonorrhoeae
Causative organism of chancroid
Haemophilus ducreyi
Causative organism of AIDS
HIV ( Human immunodeficiency Virus)
Causative organism of genital warts
Papilloma virus
Causative organism of herpes genitalis
Human herpes virus-2
Causative organism of LGV
Chlamydia trachomatis
Full meaning of LGV
Lymphogranuloma venerum
Causative organism of granuloma inguinale
Calymatobacterium granulomatis
Causative organism of NGU
Chlamydia trachomatis
REASONS FOR THE SPREAD OF STDs
- Difficulty in obtaining accurate information because of the stigma attached to STDs.
•2. Failure to intercept transmission because of short incubation period.
•3. Increase in societal permissiveness and promiscuity.
•4. Rejection of traditional moral codes and principles.
•5. Urbanization and industrialization.
•6. Greater and easier mobility due to technological advancement.
•7. Drug abuse and resistance to antibiotics.
•8. Erosion of fear of pregnancy due to effective and cheap contraceptives.
•9. Reservoir of infection in women.
•10. Absence of vaccines.
•11. Inadequate funding and facilities.
•12. Ignorance.
CLASSIFICATION OF STDs
Group 1. The old or classical STDs, which include gonorrhoea, syphilis, chancroid, lymphogranuloma venereum and granuloma inguinale. These five constitute the true or so-called “venereal diseases”.
•Group 2. All other STDs except HIV/AIDS
•Group 3. HIV/AIDS
• The newer the STD (or lower in the group above), the more difficult to diagnose and manage.
Stds are commoner :
•In sexually active adults – both males and females, usually between ages
15-40 yrs
Stds are commoner In older children by
Sexual abuse
Stds are commoner in younger children by
vertical infection (i.e. from infected mother to child in utero
The use of Condom ……. STD prevalence.
Lowers
The mode of infection could be by
un-protected sex (vaginal or anal or oral), or vertically from an infected mother to her child (in-utero or trans-placental), or through blood and blood products.
Some medical effects of STDs on the population
•
•A. In Males
•
•A. In Males
• 1. Urethral stricture
• 2. Sub-fertility and infertility
• 3. Genital cancer
• 4. Death
Some medical effects of stds on the population
B. In Females
B. In Females
• 1. Pelvic inflammatory disease ( PID)
• 2. Sub-fertility and infertility
• 3. Ectopic pregnancy
• 4. Spontaneous abortion
• 5. Still birth
• 6. Cervical cancer
• 7. Death
Some medical effects of stds on the population
•C. In Children
•C. In Children
• 1. Severe sepsis
• 2. Eye infections blindness
• 3. Pneumonia
• 4. Growth retardation
• 5. Malformations
• 6. Death
The main objectives of STDs/HIV control should include:
•1. Interruption of the transmission of the infections.
•2. Prevention of the development of infection, complications and sequellae.
•3. Reduction in the risk of HIV infection.
The spread of HIV is facilitated 2-9 times by the presence of …..
The spread of HIV is facilitated 2-9 times by the presence of STDs, especially the genital ulcer diseases.
HIV infects ……….. every minute worldwide while HIV-positive mothers double every ……. years.
HIV infects sixteen persons every minute worldwide while HIV-positive mothers double every two years.
The true global extent of STDs is unknown due to:
•1. Asymptomatic infections esp. in females
•2.Lack of access to STD facilities
•3.Lack of routine screening
•4.Fear of stigma.
Generally, STD risk is highest between ages 15-30 years and the incidence drops thereafter. Some of the reasons for this include:
- Maturity
- Formation of stable relationships (marriage) and
3.Less sexual drive
Globally, STDs are known to be twice as common in the age bracket …….years than in any other age groups. Because females mature faster than males and therefore marry earlier than males and also because older males tend to go for younger females, STDs are higher in females than males between ages …….years. However, in all ages above …..years, STDs tend to be higher in males than females.
Globally, STDs are known to be twice as common in the age bracket 15-29 years than in any other age groups. Because females mature faster than males and therefore marry earlier than males and also because older males tend to go for younger females, STDs are higher in females than males between ages 10-19 years. However, in all ages above 20 years, STDs tend to be higher in males than females.
Causative organism of molluscum-contagiosum
Pox virus
Incubation period of molloscum-contagium
1-12 wks
Examples of parasites
Sarcoptes scabies
Phthirus
Examples of protozoa
Trichomonas vaginalis
Examples of fungi
Candida albicans
Epidermophyton inguinale
Examples of spirochetes
Treponema pallidum
Examples of bacteria
Neisseria gonorrhea
Haemophilus ducreyi
Calymatobacterium granulomatis
Examples of chlamydia
Chlamydia trachomatis
Examples of viruses
Human herpes virus-2
Pox virus
Papilloma virus
Hepatitis B virus
Human immunodeficiency virus
Causative organism of serum hepatitis
Hepatitis B virus
Causative organism of scabies
Sacroptes scabies
Incubation period of scabies
1-8 wks