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In this Tuesday, Jan. 26, 2016, file photo, a health workers stands in the Sambadrome spraying insecticide to combat the Aedes aegypti mosquito that transmits the Zika virus in Rio de Janeiro, Brazil. (AP Photo/Leo Correa, File)

SNYDER: No need for unnecessary risks by holding Olympics in Rio de Janeiro

By Deron Snyder - The Washington Times

In this Tuesday, Jan. 26, 2016 photo, health workers get ready to spray insecticide to combat the Aedes aegypti mosquitoes that transmits the Zika virus, under the bleachers of the Sambadrome in Rio de Janeiro, which will be used for the Archery competition in the 2016 summer games. More than 145 public health experts signed an open letter to the World Health Organization on Friday, May 27, 2016 asking the U.N. health agency to consider whether the Rio de Janeiro Olympics should be postponed or moved because of the ongoing Zika outbreak. The letter calls for the games to be delayed or relocated "in the name of public health." (AP Photo/Leo Correa, File)

Health experts urge WHO to consider moving Rio Olympics

By MARIA CHENG - Associated Press

In this Oct. 22, 2015, file photo, Paul McCartney performs at First Niagara Center, in Buffalo, N.Y. Goldenvoice announced Tuesday, May 3, 2016, that the Rolling Stones, Bob Dylan, McCartney, Neil Young, Roger Waters and the Who will perform during a three-day concert at the desert grounds where the annual Coachella music festival is held. (AP Photo/Gary Wiepert, File)

Paul McCartney, Rolling Stones and Bob Dylan to play star-studded 3-day ‘Desert Trip’ concert

By Andrew Blake - The Washington Times

In this Sunday, April 29, 2012 photo, a 19-year old diagnosed with diabetes gives herself an injection of insulin at her home in the Los Angeles suburb of Commerce, Calif. The "obesity paradox" — the controversial notion that being overweight might actually be healthier for some people with diabetes — seems to be a myth, researchers report. A major study finds there's no survival advantage to being large, and a disadvantage to being very large. The study was published by the New England Journal of Medicine on Wednesday, Jan. 15, 2014. (AP Photo/Reed Saxon/FILE)

Diabetes on ‘relentless march’ across world

By Jennifer Graham - Deseret News

FILE-In this Saturday, March 7, 2015 file photo, health workers prepare to collect the ashes of people that died due to the Ebola virus at a crematorium on the outskirts of Monrovia, Liberia. As Liberia marks the second anniversary Wednesday of its first confirmed Ebola cases, many neighbors say they want to see the crematorium torn down so they can try to forget that terrible time. (AP Photo/ Abbas Dulleh, File)

Probe of Ebola flareup in Liberia widens; woman traveled from Guinea after husband died

By Tom Howell Jr. - The Washington Times

In this Sept. 24, 2014, file photo, health care workers load a man suspected of suffering from the Ebola virus onto an ambulance in Kenema, Sierra Leone. (AP Photo/Tanya Bindra, File)

WHO: Sierra Leone is Ebola-free again

By Tom Howell Jr. - The Washington Times

This is a Thursday, Feb. 11, 2016, file photo of aedes aegypti mosquitoes in a mosquito cage at a laboratory in Cucuta, Colombia. The World Health Organization says it may be necessary to use controversial methods like genetically modified mosquitoes to wipe out the insects that are spreading the Zika virus across the Americas. (AP Photo/Ricardo Mazalan, File)

WHO looks for new ways to wipe out mosquitoes, Zika

By Tom Howell Jr. - The Washington Times

Army soldiers and a health agent from Sao Paulo's Public health secretary check a residence during an operation against the Aedes aegypti mosquito, which is a vector for transmitting the Zika virus in Sao Paulo, Brazil, Wednesday, Jan. 20, 2016. (AP Photo/Andre Penner)

WHO reports rise of neurological disorder in Zika outbreak

By Kirsten Grieshaber - Associated Press

In this Jan. 27, 2016, file photo, an Aedes aegypti mosquito is photographed through a microscope at the Fiocruz institute in Recife, Pernambuco state, Brazil. The mosquito behind the Zika virus seems to operate like a heat-driven missile of disease. Scientists say the hotter it gets, the better the mosquito that carries Zika virus is at transmitting a variety of dangerous illnesses. (AP Photo/Felipe Dana, File)

Health officials want more Zika samples, data from Brazil

By Maria Cheng and Raphael Satter and Joshua Goodman - Associated Press

Army soldiers and a health agent from Sao Paulo's Public health secretary check a residence during an operation against the Aedes aegypti mosquito, which is a vector for transmitting the Zika virus in Sao Paulo, Brazil, Wednesday, Jan. 20, 2016. (AP Photo/Andre Penner)

Drugmaker Sanofi Pasteur launches effort for Zika vaccine

Associated Press

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, speaks at the Economic Club of Washington on various topics including the Zika virus in Washington on Jan. 29, 2016. (Associated Press) **FILE**

Zika virus: Congress pushes Obama administration for answers

By Tom Howell Jr. - The Washington Times

A researcher holds a container with female Aedes aegypti mosquitoes at the Biomedical Sciences Institute in the Sao Paulo's University, in Sao Paulo, Brazil, Monday, Jan. 18, 2016. The Aedes aegypti is a vector for transmitting the Zika virus. The Brazilian government announced it will direct funds to a biomedical research center to help develop a vaccine against the Zika virus linked to brain damage in babies. (AP Photo/Andre Penner)

Zika virus: WHO convenes emergency session

By Tom Howell Jr. - The Washington Times

In this file photo taken on Wednesday, Sept. 24, 2014, health care workers load a man suspected of suffering from the Ebola virus onto an ambulance in Kenema, Sierra Leone. A corpse has tested positive for Ebola in Sierra Leone, an official said Friday, Jan. 15, 2016, the day after the World Health Organization declared the outbreak over in West Africa. (AP Photo/ Tanya Bindra,File)

Sierra Leone reports new Ebola case

By Tom Howell Jr. - The Washington Times

This undated colorized transmission electron micrograph file image made available by the CDC shows an Ebola virus virion. (Frederick Murphy/CDC via AP, File)

WHO declares end to Ebola transmission in West Africa

By Jamey Keaten and Krista Larson - Associated Press

Guinea was officially declared Ebola-free, almost two years to the day after a toddler there became "Patient Zero," the source of an outbreak that has killed more than 11,000 people, challenged health agencies and tested the responses of governments. (Associated Press)

Ebola proving a persistent foe even as Guinea, Liberia, Sierra Leone celebrate successes

By Tom Howell Jr. - The Washington Times

In this Nov. 10, 2015 photo, trash litters Rodrigo de Freitas Lake in Rio de Janeiro, Brazil. A new round of testing by The Associated Press shows the city’s Olympic waterways are as rife with pathogens far offshore as they are nearer land, where raw sewage flows into them from fetid rivers and storm drains. (AP Photo/Leo Correa)

AP test: Rio Olympic water badly polluted, even far offshore

By Brad Brooks - Associated Press

FILE - In this Feb. 25, 2015 file photo, dead fish and trash float in the polluted Guanabara Bay in Rio de Janeiro, Brazil. Rio de Janeiro's Olympic organizing committee ruled out conducting viral tests of the human sewage-laden waterways where the 2016 Games' aquatic events will be held, following recommendations from the World Health Organization, Rio 2016 spokesman Mario Andrada said Friday, Oct. 16, 2015. (AP Photo/Leo Correa, File)

Rio 2016: No viral testing of sewage-filled Olympic waters

By JENNY BARCHFIELD - Associated Press

In this Monday, Nov. 29, 2010, file photo a patient undergoes a blood test inside a mobile health care clinic parked in downtown Johannesburg, part of a government campaign to encourage HIV testing. (AP Photo/Denis Farrell, File) **FILE**

U.N.: HIV patients should start treatment immediately

By Maria Cheng - Associated Press

In this Monday, Aug. 10, 2015, photo, health workers take a break at the Kenema Government Hospital, where more than 40 health workers died of Ebola, in Kenema, eastern Sierra Leone. (AP Photo/Sunday Alamba)

Bungling by U.N. agency hurt Ebola response: AP Investigation

By Maria Cheng and Raphael Satter and Krista Larson - Associated Press