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Mr. Powell, who is 66 and by all appearances vigorous, has maintained a demanding schedule in recent weeks, traveling twice to Europe, at one point filling a hole in his schedule with a three-nation, two-day detour to North Africa. On such trips, Mr. Powell rarely lingers. He flies by night, then begins a full workday without ever seeing a bed. Mr. Powell kept up that pace over the weekend, as news emerged of the capture of Saddam Hussein, the deposed Iraqi leader. On Sunday, Mr. Powell spoke to 23 foreign ministers, Mr. Boucher said. Mr. Ereli said Mr. Baker, who was tapped by the president for the job, would limit his contacts to discussion of Iraq's debt. Any suggestion that Mr. Powell is being shunted aside ''is a bunch of hooey,'' said Mr. Ereli, who called the Baker-Powell relationship ''complementary, not competitive.''

About three dozen children have died from influenza or its complications, according to David Daigle, a spokesman for the centers. But, on average, 92 children die every year from influenza, and it is not yet known whether the disease this year will be unusually severe among children. Daigle said the disease centers expected to send out epidemiologists around the country to study pediatric cases in an effort to learn whether other infections are joining forces with the flu virus to produce some of the more severe cases. At least 225 children have been hospitalized, with 32 in the intensive care unit, most on ventilators. Three have died, including two who had underlying illnesses. The third was healthy but developed a severe bacterial infection in addition to influenza

The organization's plan challenges the 34 countries with the highest infection rates to rapidly train workers to accelerate the integration of AIDS treatment in their health care programs. Many countries with the largest numbers of people living with H.I.V./AIDS have very few doctors or other trained health workers, the organization said. Many have died from untreated AIDS, while others have moved to wealthier countries. Many countries, medical schools, private groups and other organizations have started AIDS programs in heavily infected countries. The numbers of programs have reached the point where better coordination is needed to avoid duplication of research, training and treatment efforts, Dr. Peter Piot, the director of the United Nations AIDS program, said in a recent interview. The W.H.O.'s recommended drug combinations for simplified AIDS treatment are: Stavudine (d4t), lamivudine (3TC) and nelfinavir; AZT, lamivudine and nelfinavir; Stavudine, lamivudine and efavirenz; and AZT, lamivudine and efavirenz

The effectiveness of the vaccine will be a critical factor in determining the severity of the flu season. This year's vaccine does not include the Fujian strain that has caused the overwhelming majority of cases in the United States and Europe. LAWRENCE K. ALTMAN

Nigeria has reported the largest number this year, 251, compared with 145 for the comparable period last year. Epidemiologists have traced the spread of polio from Nigeria to four countries that were previously thought to be polio-free, Burkina Faso, Chad, Ghana and Togo. Niger, the fifth country, has had a succession of imported cases. Four polio cases have also occurred since late June in Lagos in southern Nigeria, which had been polio free since April 2001. Nigeria is the last major challenge to the goal of eradication, Dr. [David L. Heymann] said. There, the W.H.O. has run into an unexpected hurdle from accusations by some Islamic leaders that the polio vaccine leaves young girls infertile

In releasing the agency's annual report in advance of World AIDS Day on Monday, [Peter Piot] acknowledged that greater funding and stronger political commitments had moved the battle against AIDS into higher gear. But he singled out nations that were way behind in tackling AIDS. 'Many countries do not take AIDS seriously, and that is particularly the case of Russia, all the countries of the former Soviet Union, and several Asian countries,' Piot said in a telephone news conference. An estimated 1 million Russians are infected, and 'the epidemic is growing at a fearsome rate,' the report said. Chiding Russia for not making the political commitment other countries have made for AIDS, Piot said Russia allocates 'only a few million dollars for AIDS and still deals with it at the level of a deputy minister of health.' Piot said he welcomed the South African government's plan last week to provide anti-retroviral drugs to AIDS patients as well as an earlier announcement by former President Bill Clinton that he had brokered an agreement with drug companies to lower the price of AIDS drugs for many countries. The World Health Organization plans to deliver anti-retroviral drugs to 3 million people by 2005

The global epidemic of AIDS shows no sign of abating, he said, and measured against the scale of the global epidemic, the current pace and scope of the world's response to AIDS fall far short of what is required. The toll from AIDS this year is expected to be the highest ever, [Peter Piot] said in a telephone news conference, with the virus infecting 5 million new people and killing 3 million. Around the world, an estimated 40 million people are now infected with the AIDS virus

The epidemic shows no sign of abating, said the director, Dr. Peter Piot, adding, ''Measured against the scale of the global epidemic, the current pace and scope of the world's response to AIDS fall far short of what is required.'' He chided nations that were way behind in tackling AIDS -- though not, in every case, by name. ''Many countries do not take AIDS seriously, and that is particularly the case of Russia, all the countries of the former Soviet Union, and several Asian countries,'' Dr. Piot said in a teleconference. Dr. Piot said he welcomed the South African government's new plan to provide antiretroviral drugs to patients, as well as an earlier announcement by former President Bill Clinton that he had brokered an agreement with drug companies to lower the price of AIDS drugs for many countries. The World Health Organization plans to deliver antiretroviral drugs to three million people by 2005

While the pace of the battle against AIDS is picking up, efforts to stem the epidemic are 'entirely inadequate' for the health emergency that is 'continuing to spiral out of control,' the director of the U.N. AIDS program said Tuesday. He singled out nations that were way behind in tackling AIDS. 'Many countries do not take AIDS seriously, and that is particularly the case of Russia, all the countries of the former Soviet Union, and several Asian countries,' [Peter Piot] said in a teleconference

Chiding Russia for not making the political commitment that other countries have made for AIDS, [Peter Piot] said Russia allocates 'only a few million dollars for AIDS and still deals with it at the level of a deputy minister of health.' Piot said he welcomed a plan announced last week by South Africa's government to provide anti-retroviral drugs to AIDS patients, as well as an earlier announcement by former President Clinton that he had brokered a deal with drug companies to lower the price of AIDS medications for many countries. The World Health Organization plans to deliver anti-retroviral drugs to 3 million people by 2005. Southern Africa is home to about 30 percent of people living with HIV/AIDS worldwide, although the region has less than 2 percent of the world's population. In Botswana and Swaziland, the infection rate of HIV/AIDS among adults is 40 percent