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Recent Animal Disease Outbreaks And Their Impact On Human Populations Pdf

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How to detect new viral outbreaks or epidemics? We need to survey the circulation of viruses in humans and other animals using fast, sensible, cheap, and broad-spectrum methodologies. Emerging and reemerging diseases can be recognized as disorders in the One Health.

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Infectious Diseases and Meat Production

Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. Controlling deforestation shown here, in a tropical rainforest in the Congo Basin could decrease the risk of future pandemics, experts say.

Many ecologists have long suspected this, but a new study helps to reveal why: while some species are going extinct, those that tend to survive and thrive — rats and bats, for instance — are more likely to host potentially dangerous pathogens that can make the jump to humans.

The analysis of around 6, ecological communities on 6 continents adds to a growing body of evidence that connects trends in human development and biodiversity loss to disease outbreaks — but stops short of projecting where new disease outbreaks might occur. Jones is one of a cadre of researchers that has long been delving into relationships among biodiversity, land use and emerging infectious diseases. Their work has mostly flown below the radar, but now, as the world reels from the COVID pandemic, efforts to map risks in communities across the globe and to project where diseases are most likely to emerge are taking centre stage.

Others are calling for a more wide-ranging course of action. On 24 July, an interdisciplinary group of scientists, including virologists, economists and ecologists, published an essay in Science 2 , arguing that governments can help reduce the risk of future pandemics by controlling deforestation and curbing the wildlife trade, which involves the sale and consumption of wild — and often rare — animals that can host dangerous pathogens.

Previous research has shown that outbreaks of diseases such as severe acute respiratory syndrome SARS and bird influenza that cross over from animals to humans have increased in the past few decades 3 , 4.

This phenomenon is likely to be the direct result of increased contact between humans, wildlife and livestock, as people move into undeveloped areas. These interactions happen more frequently on the frontier of human expansion because of changes to the natural landscape and increased encounters with animals. A study published in April by researchers at Stanford University in California found that deforestation and habitat fragmentation in Uganda increased direct encounters between primates and people, as primates ventured out of the forest to raid crops and people ventured in to collect wood 5.

But a key question over the past decade has been whether the decline in biodiversity that inevitably accompanies human expansion on the rural frontier increases the pool of pathogens that can make the jump from animals to humans. Work by Jones and others 6 suggests that the answer in many cases is yes, because a loss in biodiversity usually results in a few species replacing many — and these species tend to be the ones hosting pathogens that can spread to humans.

For their latest analysis, Jones and her team compiled more than 3. They found that the populations of species known to host diseases transmissible to humans — including mammals such as bats, rodents and various primates — increased as the landscape changed from natural to urban, and as biodiversity generally decreased.

The group has already made this type of evaluation for Ebola virus outbreaks in Africa, creating risk maps based on development trends, the presence of probable host species, and socio-economic factors that determine the pace at which a virus might spread once it enters the human population 7.

Some researchers urge caution when communicating that biodiversity hotspots are where outbreaks are likely to occur. China has temporarily suspended its trade. But Daszak says the industry is just one piece in a larger puzzle that involves hunting, livestock, land use and ecology.

Wildlife markets like this one in Bali, Indonesia, sustain the livelihoods of many people. But they are also under scrutiny as hotspots for pathogen transmission.

Fall says the key is to align efforts by government and international agencies focused on public health, animal health, the environment and sustainable development. The latest Ebola outbreak in the DRC, which began in and ended last month, had its roots not just in disease but also in deforestation, mining, political instability and the movement of people.

The goal must be to focus resources on the riskiest areas and manage interactions between people and animals, both wild and domestic, Fall says. Gibb, R. Dobson, A. Science , — Jones, K. Nature , — Smith, K. Interface 11 , Bloomfield, L. Landscape Ecol. Faust, C. Redding, D. Nature Commun. Download references. An essential round-up of science news, opinion and analysis, delivered to your inbox every weekday.

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily. Advanced search. Skip to main content Thank you for visiting nature. PDF version. References 1. Article Google Scholar 2. PubMed Article Google Scholar 3. PubMed Article Google Scholar 4. PubMed Article Google Scholar 5. Article Google Scholar 6.

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Why deforestation and extinctions make pandemics more likely

Not a MyNAP member yet? Register for a free account to start saving and receiving special member only perks. The problem with influenza viruses is that, unlike other respiratory tract viruses, they undergo considerable antigenic variation. Antigens, which are located on the surface of the viruses, are the substances, typically glyco-proteins, that stimulate an immune response. Influenza viruses carry two types of antigens: hemagglutinin HA and neuraminidase NA. Both types undergo two forms of variation.

Most infectious diseases in humans originate from animals. In this paper, we explore the role of animal farming and meat consumption in the emergence and amplification of infectious diseases. First, we discuss how meat production increases epidemic risks, either directly through increased contact with wild and farmed animals or indirectly through its impact on the environment e. Traditional food systems such as bushmeat and backyard farming increase the risks of disease transmission from wild animals, while intensive farming amplifies the impact of the disease due to the high density, genetic proximity, increased immunodeficiency, and live transport of farmed animals. Second, we describe the various direct and indirect costs of animal-based infectious diseases, and in particular, how these diseases can negatively impact the economy and the environment.

December , an outbreak of the deadly Ebola virus began in a small village in southern Guinea, the first outbreak of the Zaire Ebola strain in West Africa. Air travel helped the disease leap from West Africa to other continents, including North America and Europe. Despite global attention and response, 12 months into the outbreak the initial source of human infection still had not been identified. Prior Ebola outbreaks in humans, as well as a concurrent outbreak in the Democratic Republic of the Congo beginning in August , have been linked to the hunting or handling of wild animals, with subsequent transmission among humans. Certain bat species are the suspected natural source for the virus and are thought to harbor it without signs of disease. Researchers have detected Ebola infection and mortality in wild chimpanzees, gorillas, and duiker antelopes, and evidence from human outbreaks suggests that these species have served as brief hosts for potential human infection when hunted or handled. Studies suggest that Ebola is causing severe declines in great ape populations—particularly critically endangered wild lowland gorillas—making it as much a threat to biodiversity as it is to human health.


the outbreak of a new strain of influenza,. A(H1N1) urban population centres and to reduce the potential Impacts of animal diseases on human well-being.


Emerging Diseases from Animals

Outbreaks of emerging infectious diseases are occurring with increasing frequency and consequences, including wildlife diseases and zoonoses. Those have potentially long-lasting effects on human and wildlife populations, with inevitable direct and indirect effects on ecosystems. The intensifying emergence of infectious pathogens has many underlying reasons, all driven by the growing anthropogenic impact on nature. Intensifying pathogen emergence can be attributed to climate change, biodiversity loss, habitat degradation, and an increasing rate of wildlife—human contacts. All of these are caused by synergies between persisting intense poverty and a growing human population.

NCBI Bookshelf. Unlike the meteorological perfect storm—happening just once in a century—the microbial perfect storm will be a recurrent event. The two events share a common feature; a combination of factors is the driving force behind each. Zoonotic disease emergence is a complex process.

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Not a MyNAP member yet? Register for a free account to start saving and receiving special member only perks. Animal health is profoundly affected by the forces of globalization and trade, the threat of bioterrorism, the restructuring and consolidation of food and agriculture production into increasingly larger commercial units, and even by human incursions into wildlife habitats.

Рука консьержа только что покинула ячейку под номером 301. Беккер поблагодарил его и быстро зашагал, ища глазами лифт. Туда и обратно, - повторил он мысленно. ГЛАВА 31 Сьюзан вернулась в Третий узел. После разговора со Стратмором она начала беспокоиться о безопасности Дэвида, а ее воображение рисовало страшные картины.

 Ничего не выйдет, - пробормотал. В разделе Служба сопровождения в справочнике было только три строчки; впрочем, ничего иного все равно не оставалось. Беккер знал лишь, что немец был с рыжеволосой спутницей, а в Испании это само по себе большая редкость. Клушар вспомнил, что ее звали Капля Росы.

Но в них была только смерть. Смерть ее веры в. Любовь и честь были забыты.

Не лезь не в свое .

Он почувствовал жжение в боку, дотронулся до больного места и посмотрел на руку. Между пальцами и на кольце Танкадо была кровь. У него закружилась голова. Увидев выгравированные знаки, Беккер страшно удивился.

 Он немного сонный, мадам. Дайте ему минутку прийти в. - Н-но… - Сьюзан произнесла слова медленно.  - Я видела сообщение… в нем говорилось… Смит кивнул: - Мы тоже прочитали это сообщение.

Иногда она видела в нем что-то от Дэвида. У них было много общего: настойчивость, увлеченность своим делом, ум. Иногда ей казалось, что Стратмор без нее пропадет; ее любовь к криптографии помогала коммандеру отвлечься от завихрений политики, напоминая о молодости, отданной взламыванию шифров. Но и она тоже многим была обязана Стратмору: он стал ее защитником в мире рвущихся к власти мужчин, помогал ей делать карьеру, оберегал ее и, как сам часто шутил, делал ее сны явью. Хотя и ненамеренно, именно Стратмор привел Дэвида Беккера в АНБ в тот памятный день, позвонив ему по телефону.

Biodiversity loss, emerging pathogens and human health risks

При этом дерево иногда приходится потрясти, чтобы собрать подгнившие плоды. И я уверена, что большинство наших граждан готовы поступиться некоторыми правами, но знать, что негодяи не разгуливают на свободе. Хейл промолчал.

 А вдруг Танкадо умнее. - Может.  - Сьюзан пожала плечами, демонстрируя равнодушие.

Очевидно, волнение отняло у него все силы. Его лицо залила мертвенная бледность. Беккер предпринял последнюю попытку: - Мистер Клушар, я хотел бы получить показания этого немца и его спутницы.

Она мечтала, чтобы он поскорее ушел. Сьюзан подумала, не позвонить ли ей Стратмору. Коммандер в два счета выставит Хейла - все-таки сегодня суббота. Но она отдавала себе отчет в том, что, если Хейла отправят домой, он сразу же заподозрит неладное, начнет обзванивать коллег-криптографов, спрашивать, что они об этом думают, В конце концов Сьюзан решила, что будет лучше, если Хейл останется. Он и так скоро уйдет.

Она попробовала закричать, но голос ей не повиновался. Ей хотелось убежать, но сильные руки тянули ее. - Я люблю тебя, - шептал коммандер.  - Я любил тебя .

 No lo se, senor. He знаю. Но уж определенно не здесь! - Он улыбнулся.  - Может, все-таки чего-нибудь выпьете. Беккер понимал, что, по мнению бармена, ведет себя странно.

Вспомнил о Сьюзан. Это были простые воспоминания: как он учил ее есть палочками, как они отправились на яхте к Кейп-Коду. Я люблю тебя, Сьюзан, - подумал.  - Помни это…. Ему казалось, что с него сорваны все внешние покровы.

Biodiversity loss, emerging pathogens and human health risks

Снова последовало молчание: Стратмор размышлял о том, что она сказала. - Следопыт? - Он, похоже, был озадачен.

4 Comments

Brian B. 03.04.2021 at 00:35

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Laetitia C. 03.04.2021 at 10:56

a third of the population within 6 months. ¹Adapted from Bender JB et al. () Recent animal disease outbreaks and their impact on human.

Paige W. 05.04.2021 at 10:25

Recent Animal Disease Outbreaks and Their Impact on Human Populations. References · Citations; Metrics; Reprints & Permissions · PDF. More Share Options.

Bart M. 07.04.2021 at 12:46

USA), Catherine Machalaba (EcoHealth Alliance, New York,. USA) the Conservation of Migratory Species of Wild Animals, When do zoonoses become human disease outbreaks? future zoonotic disease outbreaks. diseases affect mostly poor populations and are commonly economic-​response-to-COVIDpdf.

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