Buruli ulcer is a chronic, progressive skin disease caused by infection with Mycobacterium ulcerans. It is currently considered to be one of the neglected tropical diseases; less common than tuberculosis but more common than leprosy. The initial lesion is a painless subcutaneous nodule, usually less... than 5 cm diameter and adherent to skin. The nodule typically breaks down centrally after days to weeks forming an ulcer with undermined edges. Thus, the external appearance of the ulcer underestimates the true size of the affected area. The patient remains well and there is no pain unless secondary bacterial infection occurs. Other forms of M. ulcerans disease include a firm plaque lesions that behaves in the same way as the nodule or an oedematous lesion that is more aggressive and extends rapidly resulting in a very large ulcer.
Any age group can be affected by Buruli ulcer diseases, but the incidence peaks at 5 to 15 years. Ulcers are most frequently on the limbs but can be on the trunk or head, sometimes with catastrophic consequences such as loss of sight or loss of breast or genital tissue. Healing close to a joint can result in contracture, and sometimes there is so much tissue destruction on a limb that amputation is unavoidable. Occasionally osteomyelitis occurs in bone adjacent to a skin lesion but involvement of other organs is rare. Disseminated disease with HIV has been reported.
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This chapter discusses the antibacterial treatment of leprosy infections. Antibiotic treatment is
a key component of leprosy treatment, as it is vital to prevent the progression of the infection.
Treatment with rifampin and other antibiotics is highly effective and cures 98% of patients with
the ...leprosy infection. Furthermore, the relapse rate is very low, at about 1% over 5–10 years.
There is little M. leprae drug resistance in leprosy and few reports of multi-drug resistance (1, 2, 3,
4, 5, 6, 7, 8). An antibiotic treatment may take months or years to produce clinical improvement,
especially in patients with an initial high bacterial index (BI).
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Antimicrobial resistance (AMR) as a serious public health threat was globally acknowledged by WHO in 2015, through the launch of the Global Action Plan (GAP). With a limited number of new antibiotics in the developmental pipeline, many countries are in the process of establishing strategies for anti...microbial stewardship (AMS). Within each country, different healthcare challenges have
contributed to AMR. This has also shaped individual AMS strategies and policies. In South Africa (SA), there is a high burden of infectious diseases, mainly of bacterial origin. In addition, SA also has the highest number of people living with
human immunodeficiency virus (HIV) globally. According to the 2019 statistics, there are approximately 7.97 million people living with HIV in SA. Together with this, SA has the fourth largest tuberculosis population globally.
Other important challenges include poverty, malnutrition, a high burden of non-communicable diseases, and a dire shortage of trained healthcare professionals (e.g. clinicians, pharmacists, and nurses).
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Antimicrobial resistance (AMR) is one of the world’s top 10 public health threats. The World Health Organization (WHO) in the African Region, using the Antimicrobial Stewardship assessment tool, has assessed Member States progress on strengthening national capacity need for effective implementatio...n of antimicrobial stewardship interventions to mitigate the threat posed by AMR. The African Region bears the bulk of the global burden of AMR, which drives up health care costs and the increases the economic burden on families and societies. Ultimately, this puts the achievements of modern medicine at risk when infections can no longer be treated with first-line antibiotics. In 2019, the deaths associated with and those directly attributable to bacterial resistance were estimated around 4.95 million and 1.27 million respectively. Left unchecked, deaths from drug resistant infections will surpass the predicted annual death toll of 10 million by 2050.
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i. A person who is a contact of a probable or confirmed mpox case in the 21 days before the onset of signs or symptoms, and who presents with any of the following: acute onset of fever (>38.5°C), headache, myalgia (muscle pain/body aches), back pain, profound weakness or fatigue.
OR
ii. A per...son presenting since 01 January 2022 with an unexplained acute skin rash, mucosal lesions or lymphadenopathy (swollen lymph nodes). The skin rash may include single or multiple lesions in the ano-genital region or elsewhere on the body. Mucosal lesions may include single or multiple oral, conjunctival, urethral, penile, vaginal, or ano-rectal lesions. Ano-rectal lesions can also manifest as ano-rectal inflammation (proctitis), pain and/or bleeding.
AND
for which the following common causes of acute rash or skin lesions do not fully explain the clinical picture: varicella zoster, herpes zoster, measles, herpes simplex, bacterial skin infections, disseminated gonococcus infection, primary or secondary syphilis, chancroid, lymphogranuloma venereum, granuloma inguinale, molluscum contagiosum, allergic reaction (e.g., to plants); and any other locally relevant common causes of papular or vesicular rash.
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La liste CIA de l’OMS catégorise tous les antimicrobiens utilisés en médecine humaine en 3 groupes, selon leur importance pour la médecine humaine. Elle se limite actuellement aux médicaments antibactériens, dont la plupart sont également employés en médecine vété...rinaire.Cette liste est destinée à aider à la gestion de la résistance bactérienne, en veillant à ce que l’ensemble des antimicrobiens, surtout ceux d’importance critique, sont utilisés prudemment aussi bien en médecine humaine qu’en médecine vétérinaire.
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This review focusses on the interactions between the etiologic agent of Chagas disease, Trypanosoma cruzi, and its triatomine vector. The flagellate mainly colonizes the intestinal tract of the insect. The effect of triatomines on trypanosomes is indicated by susceptibility and refractoriness phenom...ena that vary according to the combination of the strains. Other effects are apparent in the different regions of the gut. In the stomach, the majority of ingested blood trypomastigotes are killed while the remaining transform to round stages. In the small intestine, these develop into epimastigotes, the main replicative stage. In the rectum, the population density is the highest and is where the infectious stage develops, the metacyclic trypomastigote. In all regions of the gut, starvation and feeding of the triatomine affect T. cruzi. In the small intestine and rectum, starvation reduces the population density and more spheromastigotes develop. In the rectum, feeding after short-term starvation induces metacyclogenesis and after long-term starvation the development of specific cells, containing several nuclei, kinetoplasts and flagella. When considering the effects of T. cruzi on triatomines, the flagellate seems to be of low pathogenicity. However, during stressful periods, which are normal in natural populations, effects occur often on the behaviour, eg, in readiness to approach the host, the period of time before defecation, dispersal and aggregation. In nymphs, the duration of the different instars and the mortality rates increase, but this seems to be induced by repeated infections or blood quality by the feeding on infected hosts. Starvation resistance is often reduced by infection. Longevity and reproduction of adults is reduced, but only after infection with some strains of T. cruzi. Only components of the surface coat of blood trypomastigotes induce an immune reaction. However, this seems to act against gut bacteria and favours the development of T. cruzi.
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Diphtheria is caused by Corynebacterium species, mostly by toxin-producing Corynebacterium diphtheriae and rarely by toxin-producing strains of C. ulcerans and C. pseudotuberculosis. The most common type of diphtheria is classic respiratory diphtheria, whereby the exotoxin produced characteristicall...y causes the formation of a pseudomembrane in the upper respiratory tract and damages other organs, usually the myocardium and peripheral nerves. Acute respiratory obstruction, acute systemic toxicity, myocarditis and neurologic complications are the usual causes of death. The infection can also affect the skin (cutaneous diphtheria). More rarely, it can affect mucous membranes at other non-respiratory sites, such as genitalia and conjunctiva.
C. diphtheriae is transmitted from person to person by intimate respiratory and direct contact; in contrast, C. ulcerans and C. pseudotuberculosis are zoonotic infections, not transmitted person-to-person. The incubation period of C. diphtheriae is two to five days (range 1– 10 days). A person is infectious as long as virulent bacteria are present in respiratory secretions, usually two weeks without antibiotics, and seldom more than six weeks. In rare cases, chronic carriers may shed organisms for six months or more. Skin lesions are often chronic and infectious for longer periods. Effective antibiotic therapy (penicillin or erythromycin) promptly terminates shedding in about one or two days.
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Mycetoma is a chronic, progressively destructive morbid inflammatory disease usually of the foot but any part of the body can be affected. Infection is most probably acquired by traumatic inoculation of certain fungi or bacteria into the subcutaneous tissue. Mycetoma was described in the modern l...iterature in 1694 but was first reported in the mid-19th century in the Indian town of Madura, and hence was initially called Madura foot.
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Фрамбезия относится к группе хронических бактериальных инфекций, в совокупности называемых эндемическими трепонематозами. Возбудителями этих заболеваний, к кот...рым также относятся эндемический сифилис (беджель) и пинта, являются спиралевидные бактерии рода Treponema. Фрамбезия — самая распространенная из этих трех инфекций.
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حقائق رئيسية
الداء العليقي هو مرض مزمن مشِّوه وموهِّن من أمراض الأطفال المعدية.
يصيب هذا المرض الجلد والعظام والغضاريف. ويُعتقد في الوقت الحالي أن الإنسان هو المست...ودع الوحيد لهذا المرض الذي ينتقل من شخص إلى آخر.
يعالج الداء العليقي بجرعة فموية واحدة من مضاد حيوي رخيص يسمى أزيثروميسين.
يوجد حالياً 15 بلداً يُعرف أنه موطون بالداء العليقي.
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RBC/IHDPC/ EID Division | November2011 - The aim of the standard operating procedures is to guide health care providers and public health
experts from various levels of the health system in the implementation of enhanced surveillance of meningococcal meningitis.
Front Chem. 2021; 9: 622286.
Published online 2021 Mar 12. doi: 10.3389/fchem.2021.622286
Yaws is a non-venereal endemic treponemal infection caused by Treponema pallidum sub-species pertenue, a bacterium closely related to Treponema pallidum ssp. pallidum, the agent of venereal syphilis. Yaws predominantly affects children living in tropical regions of the world. It causes lesions of th...e skin, mucous membranes and bones which, without treatment, can become chronic and destructive. There is no widely available test to distinguish yaws from syphilis. Thus, migration of people from yaws-endemic areas to developed countries may present clinicians with diagnostic dilemmas. The other endemic treponemal infections are bejel (endemic syphilis) caused by Treponema pallidum ssp. endemicum and pinta caused by Treponema carateum.
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Mycetoma is a specific chronic, granulomatous, inflammatory disease. It usually involves the subcutaneous tissue, most probably after traumatic inoculation of the causative organism. It has a prolonged, progressive, and indolent course, and, if untreated, it ultimately leads to destruction of the de...eper tissues and bone, resulting in deformity and disability that may necessitate amputation of the affected parts with all the social and economic implications of this. The disease is characterized by tumefaction, draining sinuses, and the presence of grains.
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Lancet Planet Health 2017 Published Online November 6, 2017 http://dx.doi.org/10.1016/S2542-5196(17)30141-9
A GUIDE FOR HEALTH WORKERS AND AUTHORITIES IN NIGERIA
Trachoma is one of the 17 WHO-defined Neglected Tropical Diseases
(NTDs) that affect over 1 billion of the world’s poorest and most
marginalized people. It is caused by the bacterium chlamydia trachomatis.