Mem Inst Oswaldo Cruz , Rio de Janeiro, Vol. 110 (3): 377-386, May 2015
This technical report summarizes the discussions on the status of programmatic transition to tenofovir, lamivudine and dolutegravir (TLD) in low– and middle- income countries, addressing the best practices and major challenges faced by HIV programmes.
The latest data on safety and efficacy of do
...
lutegravir (DTG) containing regimens were also reviewed. The document identified the remaining gaps in knowledge, research, monitoring, and surveillance on DTG and TLD transition and listed the future priorities.
more
The updates are based on evidence emerging from the: Ongoing monitoring of the disease. Protection that the population already developed against COVID-19 through previous infection or vaccination. Epidemiological situation, availability of diagnostic tests and access to therapeutic options.
As of 6:00 PM, 21 November 2013, 4,011 individuals were reported dead, 18,567 injured and 1,602 are still missing
as of 12:00 AM, 17 September 2018 - 6:00 AM, 17 September 2018
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.
more
Download (419.34 KB)
On 14 August 2024, the Director-General of the World Health Organization (WHO) determined that the resurgence of Mpox in the Democratic Republic of Congo (DRC) and a growing number of countries in Africa constitutes a Public Health Emergency of International Concern (PHEIC). Te
...
mporary recommendations are being developed with input from the International Health Regulations Emergency Committee and will be available in the coming days.
more
It is essential that all people, including people living with HIV, are able to access health services and ongoing treatment. If people living with HIV who are on ART stop abruptly because they cannot access new supplies they could rapidly become unwell, drug resistance may build and the chances of o
...
nward transmission of the virus would increase.
more
Snapshot of MSF Ebola medical activities in Guinea, Liberia and Sierra Leone
Report Feeding into the Development of a Diaspora Engagement Framework for Zambia
This brief summarizes FEWS NET’s most forward-looking analysis of projected emergency food assistance needs in FEWS NET coverage countries. The projected size of each country’s acutely food insecure population is compared to last year and the recent five-year average. Countries where external em
...
ergency food assistance needs are anticipated are identified. Projected lean season months highlighted in red indicate either an early start or an extension to the typical lean season. Additional information is provided for countries with large food insecure populations, an expectation of high severity, or where other key issues warrant additional discussion.
more