The World Health Organization on Saturday warned that the coronavirus pandemic was likely to be 'lengthy' one, as its emergency committee met to evaluate the crisis six months after sounding the international alarm. In a statement shared by the WHO, the committee warned nations about the risk of 'response fatigue' given the socio-economic pressures on each of them. The emergency panel has urged the WHO to support countries in preparing for the rollout of proven therapeutics and vaccines, along with accelerating research into the 'critical unknowns' of the virus, such as the animal source of the disease and potential animal reservoirs. It also called for improved understanding of the epidemiology and severity of Covid-19, including its long-term health effects. The WHO experts' panel first declared Covid-19 as a public health emergency of international concern on January 30. The novel coronavirus has killed at least 680,000 people and infected at least 17.6 million since the outbreak emerged in China last December.