新冠肺炎症狀2022 相關
廣告全天然發酵 數十種高濃度消化酵素，蛋白質含量高達53.2公克/100公克，分子量小 人體容易吸收。 類胡蘿蔔素含量是胡蘿蔔的1.5倍 維生素B12含量是豬肝的4倍 鐵含量是菠菜的23倍，營養完整豐富。
搜尋結果
The symptoms of COVID-19 are variable depending on the type of variant contracted, ranging from mild symptoms to a potentially fatal illness. Common symptoms include coughing, fever, loss of smell (anosmia) and taste (ageusia), with less common ones including headaches, nasal congestion and runny nose, muscle pain, sore throat, diarrhea, eye irritation, and toes swelling or turning purple, and ...
The timeline of the COVID-19 pandemic lists the articles containing the chronology and epidemiology of SARS-CoV-2, [1] the virus that causes the coronavirus disease 2019 ( COVID-19) and is responsible for the COVID-19 pandemic . The first human cases of COVID-19 occurred in Wuhan, People's Republic of China, on or about 17 November 2019. [2]
This is a list of the largest known epidemics and pandemics caused by an infectious disease in humans. Widespread non-communicable diseases such as cardiovascular disease and cancer are not included. An epidemic is the rapid spread of disease to a large number of people in a given population within a short period of time; in meningococcal ...
- Signs and Symptoms
- Cause
- Severe Disease
- Diagnosis
- Treatment
- Prognosis
- Epidemiology
- History
- Research
- Society and Culture
Typically, people infected with dengue virus are asymptomatic (80%) or have only mild symptoms such as an uncomplicated fever. Others have more severe illness (5%), and in a small proportion it is life-threatening. The incubation period(time between exposure and onset of symptoms) ranges from 3 to 14 days, but most often it is 4 to 7 days. The char...
Virology
Dengue virus (DENV) is an RNA virus of the family Flaviviridae; genus Flavivirus. Other members of the same genus include yellow fever virus, West Nile virus, and Zika virus.Dengue virus genome (genetic material) contains about 11,000 nucleotide bases, which code for the three structural protein molecules (C, prM and E) that form the virus particle and seven other protein molecules that are required for replication of the virus. There are four confirmed strains of the virus, called serotypes,...
Transmission
Dengue virus is most frequently transmitted by the bite of mosquitos in the Aedes genus, particularly A. aegypti. They prefer to feed at dusk and dawn, but they may bite and thus spread infection at any time of day. Other Aedes species that may transmit the disease include A. albopictus, A. polynesiensis and A. scutellaris. Humans are the primary host of the virus, but it also circulates in nonhuman primates, and can infect other mammals.An infection can be acquired via a single bite. For 2 t...
Risk factors
The principal risk for infection with dengue is the bite of an infected mosquito. This is more probable in areas where the disease is endemic, especially where there is high population density, poor sanitation, and standing water where mosquitoes can breed. It can be mitigated by taking steps to avoid bites such as by wearing clothing that fully covers the skin, using mosquito netting while resting, and/or the application of insect repellent (DEETbeing the most effective). Chronic diseases –...
The World Health Organization's International Classification of Diseases divides dengue fever into two classes: uncomplicated and severe. Severe dengueis defined as that associated with severe bleeding, severe organ dysfunction, or severe plasma leakage. Severe dengue can develop suddenly, sometimes after a few days as the fever subsides. Leakage o...
Mild cases of dengue fever can easily be confused with several common diseases including Influenza, measles, chikungunya, and zika. Dengue, chikungunya and zika share the same mode of transmission (Aedes mosquitoes) and are often endemic in the same regions, so that it is possible to be infected simultaneously by more than one disease. For travelle...
As of March 2024, there is no specific antiviral treatment available for dengue fever. Most cases of dengue fever have mild symptoms, and recovery takes place in a few days. No treatment is required for these cases. Acetaminophen (Paracetamol, Tylenol) may be used to relieve mild fever or pain. Other common pain relievers, including aspirin, ibupro...
Most people with dengue recover without any ongoing problems. The risk of death among those with severe dengue is 0.8% to 2.5%, and with adequate treatment this is less than 1%. However, those who develop significantly low blood pressure may have a fatality rate of up to 26%. The risk of death among children less than five years old is four times g...
As of March 2023, dengue is endemic in more than 100 countries with cases reported in every continent with the exception of Antarctica. The Americas, Southeast Asia and the Western Pacific regions are the most seriously affected. It is difficult to estimate the full extent of the disease, as many cases are mild and not correctly diagnosed. WHO curr...
The first historical record of a case of probable dengue fever is in a Chinese medical encyclopedia from the Jin Dynasty (266–420)which referred to a "water poison" associated with flying insects. The principal mosquito vector of dengue, Aedes aegypti, spread out of Africa in the 15th to 19th centuries due to the slave trade and consequent expansio...
Research directions include dengue pathogenesis (the process by which the disease develops in humans), as well as the biology, ecology and behaviour of the mosquito vector. Improved diagnostics would enable faster and more appropriate treatment. Attempts are ongoing to develop an antiviralmedicine targeting the NS3 or NS5 proteins. In addition to t...
Blood donation
Outbreaks of dengue fever increase the need for blood products while decreasing the number of potential blood donors due to potential infection with the virus.Someone who has a dengue infection is typically not allowed to donate blood for at least the next six months.
Public awareness
International Anti-Dengue Day is observed every year on 15 June in a number of countries. The idea was first agreed upon in 2010 with the first event held in Jakarta, Indonesia, in 2011. Further events were held in 2012 in Yangon, Myanmar, and in 2013 in Vietnam. Goals are to increase public awareness about dengue, mobilize resources for its prevention and control and, to demonstrate the Southeast Asian region's commitment in tackling the disease.Efforts are ongoing as of 2019 to make it a gl...
Economic burden
A study estimate that the global burden of dengue in 2013 amounted to US$8·9 billion.
The 2022 FIFA World Cup was the 22nd FIFA World Cup, the world championship for national football teams organized by FIFA. It took place in Qatar from 20 November to 18 December 2022, after the country was awarded the hosting rights in 2010.[2] It was the first World Cup to be held in the Arab world and Muslim world, and the second held ...
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other ...
Norway (Bokmål: Norge, Nynorsk: Noreg), formally the Kingdom of Norway, is a Nordic country in Northern Europe, situated on the Scandinavian Peninsula.The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of Norway. Bouvet Island, located in the Subantarctic, is a dependency; Norway also claims the Antarctic territories of Peter I Island and Queen Maud Land.
