GENEVA (AFP) - Governments braced their populations on Thursday for a grim battle with swine flu after the World Health Organisation stepped up its global alert and said that a pandemic is imminent. Amid warnings that more deaths are inevitable, governments launched publicity campaigns, while France pressed calls for a ban on flights to Mexico and Italy urged the European Union to stockpile vaccines. New swine flu cases were confirmed in Switzerland and Peru, meaning there are now more than 150 confirmed cases in 11 countries outside Mexico where the death toll has been revised down to 84. One child has also died in the United States. A World Bank employee was diagnosed with swine flu in the US capital after falling ill after a trip to Mexico and a second test is being carried out, the bank said Thursday. Swine flu is believed to be a new strain that combines bird, swine and common human influenza. It has rapidly brought Mexico to a virtual standstill and made its way around the world forcing governments to step up efforts to halt the spread. France pushed for a ban on flights to Mexico and Italy urged Europe to stockpile vaccines as EU health ministers held an emergency meeting in Luxembourg. The French proposal has so far found little public support among other European governments but Italy has now called on EU partners to set up a strategic stockpile of antivirals and vaccines. The World Health Organisation will begin referring to the swine flu virus as influenza A (H1N1), the United Nations health agency said on its website Thursday. From today, WHO will refer to the new influenza virus as influenza A (H1N1), said the health agency. The World Health Organisation on Thursday said there was no evidence to suggest that it should raise a pandemic flu alert from phase five to the highest level of six. The WHO on Thursday said the world has to look out for outbreaks of the swine flu virus in the southern hemisphere, as the region heads into the winter months. Britain, where there are eight confirmed cases including a honeymoon couple and a 12-year-old girl, launched a mass public information campaign Thursday over the swine flu threat. Adverts on television, radio and in newspapers stressed the need to take basic hygiene precautions such as using tissues and washing hands. Britains Chief Medical Officer Liam Donaldson said: Most people who get flu, even a new strain of flu, will make a good recovery. Its a nasty illness but its short and they will recover. Japanese Prime Minister Taro Aso ordered an all-out campaign against swine flu. Asos cabinet said military physicians would be sent to Tokyos main airport, hospitals would set up special 'fever clinics and all live pig imports would be checked. Mexico has shut down public venues-including popular tourist sites as well as all restaurants, bars and gyms in the capital-while major cruise lines and tour operators have halted trips to the country. In a televised address President Felipe Calderon urged Mexicans to stay home during a five-day holiday weekend that starts Friday. The government said the crisis could cost Mexico up to 70 billion dollars. Mexican officials said eight people were confirmed dead while 91 infected people were healthy. They said the suspected death toll from the disease was 84, about half the previous number. The only confirmed death outside Mexico was a Mexican toddler in the United States, announced on Wednesday. Unfortunately I would anticipate that we will see additional deaths, said Richard Besser, acting head of the US Centers for Disease Control and Prevention (CDC). President Obama vowed to do whatever it takes to combat deadly swine flu but rejected calls to close the US border, calling that a pointless step with the virus already spreading on US soil. In New Zealand, officials said the number of confirmed or probable cases was now 16 - three confirmed-and that the number of suspected cases was at 111. Switzerland became the fifth European country to confirm the virus, with one case in a man recently returned from Mexico. There are also cases in Austria, Britain, Germany, Spain and Peru. Egypt ordered the slaughter of all pigs in the country and there have been widespread bans on imports of North American pork, even though the disease cannot be caught from eating the meat.