Dengue is a mosquito-borne viral disease that occurs mainly in the tropics and subtropics but has a high potential to spread to new areas. Dengue infections are climate sensitive, so it is important to better understand how changing climate factors affect the potential for geographic spread and futu...re dengue epidemics. Vectorial capacity (VC) describes a vector's propensity to transmit dengue taking into account human, virus, and vector interactions. VC is highly temperature dependent, but most dengue models only take mean temperature values into account. Recent evidence shows that diurnal temperature range (DTR) plays an important role in influencing the behavior of the primary dengue vector Aedes aegypti. In this study, we used relative VC to estimate dengue epidemic potential (DEP) based on the temperature and DTR dependence of the parameters of A. aegypti. We found a strong temperature dependence of DEP; it peaked at a mean temperature of 29.3°C when DTR was 0°C and at 20°C when DTR was 20°C. Increasing average temperatures up to 29°C led to an increased DEP, but temperatures above 29°C reduced DEP. In tropical areas where the mean temperatures are close to 29°C, a small DTR increased DEP while a large DTR reduced it. In cold to temperate or extremely hot climates where the mean temperatures are far from 29°C, increasing DTR was associated with increasing DEP. Incorporating these findings using historical and predicted temperature and DTR over a two hundred year period (1901-2099), we found an increasing trend of global DEP in temperate regions. Small increases in DEP were observed over the last 100 years and large increases are expected by the end of this century in temperate Northern Hemisphere regions using climate change projections. These findings illustrate the importance of including DTR when mapping DEP based on VC.
more
At the time of writing, the novel coronavirus pandemic had reached every region of the world, with millions of infections globally and untold disruptions to nearly every aspect of daily life.
Policy brief, 24 July 2020
The COVID-19 pandemic has affected older people disproportionately, especially those living in long-term care facilities. In many countries, evidence shows that more than 40% of COVID-19 related deaths have been linked to long-term care facilities, with figures being as h...igh as 80% in some high-income countries. Concerted action is needed to mitigate the impact across all aspects of long-term care, including home- and community-based care, given that most users and providers of care are those who are vulnerable to severe COVID-19.
This policy brief provides 11 policy objectives and key action points to prevent and manage COVID-19 across long-term care. Its intended audience is policy makers and authorities (national, subnational and local) involved in the COVID-19 pandemic. The brief builds on currently available evidence on the measures taken to prevent, prepare for and respond to the COVID‑19 pandemic across long-term care services including care providers
more
In the Region of the Americas, the leishmaniases are a group of diseases caused by various species of Leishmania, which cause a set of clinical syndromes in infected humans that can involve the skin, mucosa, and visceral organs. The spectrum of clinical disease is varied and depends on the interacti...on of several factors related to the parasite, the vector, and the host. Cutaneous leishmaniasis is the form most frequently reported in the Region and nearly 90% of cases present single or multiple localized lesions. Other cutaneous clinical forms, such as disseminated and diffuse cutaneous leishmaniasis, are more difficult to treat and relapses are common. The mucosal form is serious because it can cause disfigurement and severe disability if not diagnosed and treated early on. Visceral leishmaniasis is the most severe form, as it can cause death in up to 90% of untreated people.
more
For the first time in almost 50 years there are two new drugs for the treatment of drug-resistant TB (DR-TB): bedaquiline and delamanid. There has also been increased attention given to the safety and efficacy of “re-purposed” drugs that have been widely used to treat other infections but are al...so showing promise in the treatment of DR-TB, including linezolid and clofazimine. This special supplemental guide has been developed for nurses, because it is essential that nurses be provided with material that maximizes their ability to provide optimal support to patients who are receiving new and re-purposed drugs
more
Mpox is a zoonotic disease caused by a double-stranded DNA virus that belongs to the Orthopoxvirus genus of the Poxviridae family. The disease presents with symptoms similar to smallpox but with a lesser severity. It was first discovered in 1958 when two outbreaks of a poxlike disease occurred in co...lonies of monkeys kept for research, hence the name ‘mpox. The first human case of mpox was recorded in 1970 in the Democratic Republic of the Congo (DRC), which has subsequently spread to other central and western African countries. There are two known clades of the virus: clade I and clade II. Clade I, which is most frequently reported from countries in Central Africa, tends to be more severe than clade II. Cameroon is the only country known to harbour both clades.
more
Zimbabwe has, over the years, grappled with the repercussions of the climate crisis, which have led to erratic rainfall patterns characterized by either severe floods or prolonged periods of drought. The nation has experienced a concerning trend of numerous regions reporting rainfall levels below th...e usual during what should be "normal" years. The upcoming El Niño event forecasted for 2023-2024, which is associated with drier-than-average rainfall, is poised to exacerbate this predicament. It is expected to intensify aridity, significantly impacting food and animal production across many areas, including those typically classified as "dry regions."
more
This document provides a summary of the recommendations for hand hygiene best practices to be performed by health workers providing care and/or support to patients with filovirus infection (Ebola and Marburg viruses).
Epidemiological Update
Dengue
7 February 2020
Situation summary
In the Region of the Americas, between epidemiological week (EW) 1 and EW 521 of 2019, a total of 3,139,335 cases of dengue have been reported (321.58 cases per 100,000 population), including 1,538 deaths. Of the total cases, 1,367,...353 (43.6%) were laboratory-confirmed and 28,169 (0.9%) were classified as severe dengue. The case-fatality rate was 0.049%.
more
There has been important progress for the rights of adolescent girls and women in recent decades, yet millions still struggle to
access the nutritious diets, essential nutrition services and nutrition and care practices they need to prevent malnutrition.
Undernutrition, micronutrient deficiencies ...and anaemia amplify gender inequalities by lowering learning potential, wages and life opportunities for adolescent girls and women, weakening their immunity to infections, and increasing their risk of lifethreatening complications during pregnancy and childbirth.
more
Tuberculosis (TB) is the deadliest infectious disease in most low- and middle-income countries, claiming more than 4,000 lives each day. The unprecedented COVID-19 pandemic has seriously impacted people with pre-existing health conditions. People with TB are usually more vulnerable to other infectio...ns, including the novel coronavirus, due to pre-existing lung damage. They are also at higher risk of developing complications from COVID-19.
more
Monkeypox is an emerging viral zoonosis with symptoms similar to those observed in smallpox patients, although less severe. Since the global eradication of smallpox in 1980, monkeypox has emerged as the most important orthopoxvirus in humans. The Advisory Committee on Variola Virus Research (ACVVR) ...which meets annually to oversee smallpox research has highlighted the importance of diagnostics that could distinguish between variola and other strains of orthopoxviruses, including monkeypox virus. The ACVVR encourages the positive effects of current smallpox research on all orthopoxviruses, specifically monkeypox, such as the development of diagnostic tools.
more
WHO published guidance for clinicians and health care decision-makers on the use of corticosteroids in patients with COVID-19.
We recommend systemic corticosteroids for the treatment of patients with severe and critical COVID-19. We suggest not to use corticosteroids in the treatment of patients ...with non-severe COVID-19 as the treatment brought no benefits, and could even prove harmful. Treatment should be under supervision of a clinician.
Corticosteroids are listed in the WHO model list of essential medicines, readily available globally at a low cost. WHO encourages countries to maintain sufficient stocks of corticosteroids to treat COVID-19 and the other disease for which they are effective, while not maintaining excessive stocks which could deny other countries access.
more
Female Genital Schistosomiasis (FGS) is a gynaecological disease caused by Schistosoma haematobium, a parasitic worm that is acquired by skin contact with freshwater contaminated by schistosome cerceriae. Communities in which the infection is most endemic have limited access to clean water and healt...hcare services. Up to 150 million adolescent girls and women are estimated to be at risk of FGS and about 16–56 milion womens are living with FGS, with the majority of these in sub-Saharan Africa. The variability of these estimates points to the fact that this neglected tropical disease is not well studied and frequently not prioritized by local, regional, and global health policy makers.
more
Updated Guideline.
The Emergency Triage Assessment and Treatment (ETAT) guidelines provide guidance on the most common emergency conditions in children presenting at the health facility. These include but are not limited to airway obstruction and other breathing problems; circulatory impairment or ...shock; severely altered CNS function (coma or convulsive seizures); and severe dehydration which require urgent appropriate care to prevent death.
more
Overview: Risk communication and community engagement are essential for any disease outbreak response. This is particularly critical during outbreaks of Ebola which may create fear in the public and frontline responders alike due to severe presentation of symptoms, misunderstanding of the causes of ...illness and high fatality rates. This document outlines some of the key considerations for risk communication and community engagement response to Ebola outbreak in Democratic Republic of the Congo.
Ebola outbreaks have been associated with misinformation and false rumours. In the context of RCCE, rumours refer to unsubstantiated information, claims or beliefs about what is causing the disease or how it can be treated/cured. If not proactively addressed in culturally appropriate ways, misinformation and rumours can lead to the further rapid spread of the disease and unnecessary deaths, severe disease, suffering, and societal and economic loss.
The publication includes a 'Rumour Tracking Tool' (Annex II).
more
This report presents an analysis of antibacterial agents in preclinical (third annual review) and clinical (fifth annual review) development. The analysis covers traditional (direct-acting small molecules) and non-traditional antibacterial agents in development worldwide. It evaluates to what extent... the present pipeline addresses infections caused by WHO Priority Pathogens, Mycobacterium tuberculosis and Clostridioides difficile. The report also provides an assessment of the traditional agents with respect to whether they meet a set of predefined criteria for innovation, namely absence of known cross-resistance, new target, mode of action and/or class. It also includes an overview of the agents that obtained authorization since 1 July 2017.
more
The flip book is for pre-deployment trainings for Ebola response, and is based on frequently asked questions about Ebola virus disease (EVD):
What is Ebola virus disease?
How do people become infected with EVD?
Why WHO is focusing on safe and dignified burials of people who have died ...from Ebola?
Who is most at risk?
What are the symptoms of Ebola infection?
What treatment is available for Ebola?
more
This Tuberculosis guide has been developed jointly by Médecins Sans Frontières and Partners In Health. It aims at providing useful information to the clinicians and health staff for the comprehensive management of tuberculosis. Forms of susceptible and resistant tuberculosis, tuberculosis in child...ren, and HIV co-infection are all fully addressed.
more