In the given figure, AB||DC, AD||EG||HF||BC. If ar(∆ADE)+ ar(∆GEF) + ar(∆HBC) is 50 cm², then the area of quadrilateral ABCD is equal to
Answers
Answer:
Under the International Health Regulations, a global legal agreement revised in 2005 and signed by all WHO members, countries are required to report to WHO any disease outbreaks that are unexpected or of unknown cause and have significant risk of international spread.
China reported a cluster of pneumonia cases to WHO on Dec. 31, 2019. "Based on the [International Health Regulations], what is expected from WHO is declaring the Public Health Emergency of International Concern as early as possible," Tedros said on April 22.
That PHEIC designation is an official alert that triggers a set of responses. WHO can help guide the country and gauge whether its response is effective. And it can bring in international assistance for training, surveillance and other measures. But all of this can only be done "at the request of a State Party."
Timing is tricky. "It's partly a technical decision. It's partly a political decision," Atun says. "If you act too early, you may contain the epidemic but people may say, 'There was no need [to act so early].' But if you act too late countries will say, 'You are too late and we're now facing the consequences.' "
WHO declared the coronavirus a PHEIC on Jan. 30, when there were no reported deaths outside of China but a sharp increase in the number of countries reporting cases.
"Looking back, I think we declared the emergency at the right time, and when the world had enough time to respond," Tedros said on April 22.
Weeks later, in its role as an international standard-bearer, WHO officially named the disease COVID-19.
In the months since, WHO has requested information that countries are bound to provide under international health regulations — for instance, explanations of why travel bans are needed to stop disease spread. WHO has also asked countries — including China — for timely and accurate outbreak data that they're required to provide under the international health regulations.
Drawing from publications and discussions with researchers globally, WHO has published reams of COVID-related public health advice on topics ranging from diagnostic tests and the public use of masks to how religious leaders can assess the risks of holding social and religious gatherings during Ramadan and how countries can manage risks as they lift their lockdowns. The agency has also developed online courses to train health care workers to diagnose and treat COVID-19 patients.
WHO has sent more than 70 teams of response coordinators, epidemiologists and other advisers into countries to help guide COVID-19 responses. It is also raising money for and organizing a global COVID-19 supply chain to get diagnostic tests, medical equipment and aid workers to places that need them. "We estimate this supply chain may need to cover more than 30% of the world's needs in the acute phase of the pandemic," Tedros said at a press conference April 10, calling on donors to support the initiative.
And the agency is helping to organize global research into treatment drugs and potential coronavirus vaccines. In February, WHO brought medical doctors, virologists, modelers and epidemiologists together in a global research forum to establish a unified set of priorities and timelines for COVID-19 research. On April 24, WHO announced a pledge campaign for global collaboration asking researchers, donors and manufacturers to agree to work together and commit to equitable distribution of vaccines and medicines.