Early on, ultrafiltration played a unique role in "proving" that an infectious agent was a virus, as did a failure to find any microscopically visible agent, failure to show replication of the agent in the absence of viable cells, thermolability of the agent, and demonstration of a specific...
With a new N1N1 influenza virus spreading around the world, governments in many countries have revived advertisementsentreating8people to observe personalhygiene9. However, experts are uncertain as to what constitutes an infective dose when it comes to influenza viruses. But as a guide, previous r...
This paper describes an exploratory analysis of responses to one open question about what constitutes the best sex life, which were often only several words in length and occasionally ambiguous. A more in-depth, purely qualitative investigation of this issue may reveal greater complexity and richness...
In recent years, the WHO has changed how it decides whether an outbreak constitutes a pandemic, following criticism that the threat of the 2009 swine flu had been exaggerated. 近年来，世界卫生组织改变了对疫情是否构成大流行的判断方式，此前有批评称，2009年猪流感的威胁被夸大了。Many governments sto...
What constitutes a flu epidemic? What are epidemic prone diseases? What is a plague? What was the swine flu epidemic? What qualifies as a suspected disease outbreak? What is the etiology of Ebola? What factors make an epidemic especially bad?
The current study sought to explore gay and bisexual men’s conceptions of what constitutes the ‘best sex’. Method The EMIS survey of 2010 recruited more than 180,000 respondents from 38 European countries to complete an online questionnaire about sexual health and behaviour. The 12,942 ...
What is the epidemic threshold for a disease? What can cause an non-infectious disease? What can cause a non-communicable disease? What organisms cause infectious disease? What are the symptoms of an infectious disease caused by? What constitutes a flu epidemic?
In recent years, the WHO has changed how it decides whether an outbreak constitutes a pandemic, following criticism that the threat of the 2009 swine flu had been exaggerated. 近年来,世界卫生组织改变了对疫情是否构成大流行的判断方式,此前有批评称,2009年猪流感的威胁被夸大了。
Although the classification of what constitutes critical infrastructure may vary across countries (the US has 16 narrowly defined categories, whereas Indonesia has 6 broad categories for example), protecting mission critical infrastructure is crucial for a nation’s security, and their public safety, as...
What constitutes a flu epidemic? Is Ebola an RNA virus? What are the effects of the AIDS epidemic in Africa? What is SARS virus? What disease has caused a major epidemic in Africa? What are the consequences of a cholera outbreak?