Contact tracing for COVID-19 is the process of identifying, assessing, and managing people who have been exposed to someone who has been infected with the SARS-CoV-2 virus, while quarantine is the separation of contacts from other people after exposure to a probable or confirmed case of SARS-CoV-2 i...nfection. In the context of growing global population immunity from COVID-19 vaccination and past SARS-CoV-2 infection, WHO recommends that identification, contact, quarantine and follow-up should be prioritized for individuals at high risk who have been in contact with a confirmed or probable case of SARS-CoV-2 infection, rather than targeting all contacts. This updated guidance also introduces shorter recommended quarantine periods, including the ability to further shorten quarantine through the use of testing. National and local health authorities should use risk-based approaches to contact tracing and quarantine that include reviewing and adjusting to their local circumstances and disease epidemiology, population immunity, their health system’s capacities, and risk tolerance.
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Update, 23 de junio de 2022
21 January 2022
The overall threat posed by Omicron largely depends on four key questions: (i) how transmissible the variant is; (ii) how well vaccines and prior infection protect against infection, transmission, clinical disease and death; (iii) how virulent the variant is compared to other varian...ts; and (iv) how populations understand these dynamics, perceive risk and follow control measures, including public health and social measures (PHSM).
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Sur la base des informations disponibles au 28 février 2021
Rapid Policy Brief Series Series 14: COVID-19 and hypertension
— com base na informação disponível a 28 de Fevereiro de 2021
Rapid Policy Brief Series Series 14: COVID-19 and hypertension
Community health workers (CHWs) play a significant role in Primary health Care due to their proximity to households, communities and the health care system. Many studies focus on CHWs and the work they do. However, few have examined their experiences and identity and how that might influence how the...y view and perform their roles. The objectives of the study were to: Describe the role of CHWs in community-based health care in Northern Cape, Identify the perceived barriers and enablers to CHWs role performance, Explore CHWs views regarding the support from the communities and the formal healthcare system in Northern Cape. An exploratory qualitative design using focus groups was adopted. Forty-six (46) CHWs were purposively selected using the critical case sampling approach. Data were collected through three focus group interviews in three regions. Analysis followed the Graneheim & Lundman thematic analysis. Three themes emerged from data: perceived contribution to Primary Health Care, recognition of CHWs role, measures to improve working conditions. Findings showed that CHWs were engaged in various health and social care roles, they believed that they made a significant contribution to PHC, and that the health system persistently relied on their services. The enabler for finding meaning in their work was the positive community response and the good relations they had with the team leaders. The major barrier was the structure of the CHWs programme and the perceived lack of support by the government. The complex issues CHWs address in the community call for a review of their roles and workload as well as the support they receive from the formal healthcare system.
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There is increasing interest in understanding the role of air pollution as one of the greatest threats to human health worldwide. Nine of 10 individuals breathe air with polluted compounds that have a great impact on lung tissue. The nature of the relationship is complex, and new or updated data are... constantly being reported in the literature. The goal of our review was to summarize the most important air pollutants and their impact on the main respiratory diseases (chronic obstructive pulmonary disease, asthma, lung cancer, idiopathic pulmonary fibrosis, respiratory infections, bronchiectasis, tuberculosis) to reduce both short- and the long-term exposure consequences. We considered the most important air pollutants, including sulfur dioxide, nitrogen dioxide, carbon monoxide, volatile organic compounds, ozone, particulate matter and biomass smoke, and observed their impact on pulmonary pathologies. We focused on respiratory pathologies, because air pollution potentiates the increase in respiratory diseases, and the evidence that air pollutants have a detrimental effect is growing. It is imperative to constantly improve policy initiatives on air quality in both high- and low-income countries.
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Tại nhiều quốc gia, cú sốc của làn sóng kiểm dịch thứ nhất đã lắng xuống, số ca bệnh cũng đã giảm, việc gỡ bỏ các lệnh phong tỏa đang được xem xét hoặc đã được thực hiện ở nhiều nơi. Vũ Hán đã mở cửa trở lại. Nhưng ph...ải chăng ta đang bị đánh lừa bởi vẻ ngoài? Liệu làn sóng dịch bệnh thứ hai có xảy ra không, và nếu có thì khi nào chúng sẽ đến?
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In 2015, 5.9 million children under age five died (1). The major causes of child deaths globally are pneumonia, prematurity, intrapartum-related complications, neonatal sepsis, congenital anomalies, diarrhoea, injuries and malaria (2). Most of these diseases and conditions are at least partially cau...sed by the environment. It was estimated in 2012 that 26% of childhood deaths and 25% of the total disease burden in children under five could be prevented through the reduction of environmental risks such as air pollution, unsafe water, sanitation and inadequate hygiene or chemicals.
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