Научная справка
24 апреля 2020 г.
При инфицировании в естественных условиях выработка иммунитета к патогенному микроорганизму проходит в несколько этапов и заним...ет от 1 до 2 недель. При вирусной инфекции врожденный иммунитет обеспечивает немедленную реакцию организма, которая заключается в активации неспецифического иммунного ответа, приводящего к замедлению инфекционного процесса макрофагами, нейтрофилами и дендритными клетками, и которая в ряде случаев обусловливает бессимптомное течение инфекции. Затем происходит активация адаптивного иммунного ответа, при котором в организме начинается выработка специфических антител, способных к связыванию с вирусными частицами. Данные антитела являются белками и носят название иммуноглобулинов. Кроме того, в организме образуются Т-клетки, способные распознавать и уничтожать другие клетки, пораженные вирусом. Это звено иммунитета носит название клеточного. Функционирование нескольких звеньев иммунитета при адаптивном ответе может способствовать элиминации вируса из организма, а при достаточной активности реакции – препятствовать переходу заболевания в тяжелую форму и повторному заражению той же инфекцией. Количественной мерой данного процесса является уровень антител в крови.
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PQDx 0144-043-00 WHO
PQDx Public Report
November/2016, version 4.0
PQDx 0033-013-00 WHO
PQ Public Report
July/2016, version 5.0
MMWR. Recommendations and Reports:
December 16, 2005 / 54(RR15);49-55
The third edition, released in 2018, has grown to include a total of 18 chapters, contributed by 20 experts and authors from many countries. The goal remains the same: to educate primary care providers on the best practices in TB diagnosis, treatment and follow-up. All articles are richly illustrate...d, and most include quizzes and CME questions for self learning. The 3rd edition includes new chapters on MDR-TB, adverse effects of TB drugs, adherence monitoring strategies, and nutritional support. There is also content on how to manage children with TB, care for patients co-infected with TB and HIV, how to read and interpret chest x-rays, and how to avoid common pitfalls in TB management.
To download book chapters or the whole book go to the website: http://www.letstalktb.org/download/
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MSF International AIDS Working Group
National Guidelines for HIV & AIDS Care and Treatment (5th Edition)
Integrated Management of pregnancy and childbirth
Population movements have turned Chagas disease (CD) into a global public health problem. Despite the successful implementation of subregional initiatives to control vectorial and transfusional Trypanosoma cruzi transmission in Latin American settings where the disease is endemic, congenital CD (cCD...) remains a significant challenge. In countries where the disease is not endemic, vertical transmission plays a key role in CD expansion and is the main focus of its control. Although several health organizations provide general protocols for cCD control, its management in each geopolitical region depends on local authorities, which has resulted in a multitude of approaches. The aims of this review are to (i) describe the current global situation in CD management, with emphasis on congenital infection, and (ii) summarize the spectrum of available strategies, both official and unofficial, for cCD prevention and control in countries of endemicity and nonendemicity. From an economic point of view, the early detection and treatment of cCD are cost-effective. However, in countries where the disease is not endemic, national health policies for cCD control are nonexistent, and official regional protocols are scarce and restricted to Europe. Countries of endemicity have more protocols in place, but the implementation of diagnostic methods is hampered by economic constraints. Moreover, most protocols in both countries where the disease is endemic and those where it is not endemic have yet to incorporate recently developed technologies. The wide methodological diversity in cCD diagnostic algorithms reflects the lack of a consensus. This review may represent a first step toward the development of a common strategy, which will require the collaboration of health organizations, governments, and experts in the field.
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Antimicrobial Resistance Surveillance and Research Network | This manual describes well accepted methods to carry out drug susceptibility testing on important gram positive and gram negative clinically relevant bacteria. Methods of specimen collection, transport, culture, anti-microbial drug suscept...ibility testing (common, special phenotypic and
molecular techniques) as well as quality control and quality assurance have been described in a concise manner.
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Leptospirosis is a zoonotic disease with epidemic potential, especially after a heavy rainfall,
caused by a bacterium called Leptospira. Leptospira interrogans is pathogenic to humans and
animals, with more than 200 serologic variants or serovars. Humans usually acquire
leptospirosis through dire...ct contact with the urine of infected animals or a urine-contaminated
environment. Human-to-human transmission occurs only very rarely. Leptospirosis may present
with a wide variety of clinical manifestations, from a mild illness that may progress to a serious
and sometimes fatal disease. Its symptoms may mimic many diseases, such as influenza,
dengue and other viral haemorrhagic diseases; making the correct diagnosis (clinical and
laboratory) at the onset of symptoms is important to prevent severe cases and save lives,
primarily in outbreak situations.
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