Preliminary results of a study into persistence of Ebola virus in body fluids show that some men still produce semen samples that test positive for Ebola virus nine months after onset of symptoms.

Original title: “Preliminary study finds that Ebola virus fragments can persist in the semen of some survivors for at least nine months - Press Release”

On September 21, 2015, the Centers for Disease Control and Prevention (CDC) and the Department of Homeland Security (DHS) will remove Liberia from the list of nations affected by Ebola that are subject to enhanced visa and port-of-entry screening.

Original title: “Enhanced Airport Entry Screening To End for Travelers from Liberia to the United States - Media Statement”

Effective Sept. 3, 2015, CDC has downgraded the travel notice for Ebola in Liberia to a Watch Level 1, which means CDC recommends U.S. residents practice usual precautions when traveling to Liberia. Travel notices are designed to inform travelers and clinicians about current health issues related to specific destinations.

Original title: “Liberia Travel Alert Revised from Level 2 to Level 1: "Practice Usual Precautions" - Media Statement”

The Ebola epidemic that began in West Africa in early 2014 continues today. With more than 27,000 reported Ebola cases and more than 11,000 deaths, the scope has been unprecedented. Equally extraordinary is the scale and duration of the response by the Centers for Disease Control and Prevention and partners.

Original title: “CDC versus Ebola: The Road to Zero - Press Release”

The United States government is modifying its enhanced Ebola entry screening and monitoring program for travelers from Liberia.

Original title: “New Entry Screening and Monitoring Guidelines for Travelers Entering the United States from Liberia - Media Statement”

CDC has downgraded the travel notice for Ebola in Liberia to an Alert, Level 2, which means that CDC no longer recommends U.S. residents avoid nonessential travel to Liberia.

Original title: “Liberia Travel Alert Revised from Level 3 to Level 2: "Practice Enhanced Precautions" - Media Statement”

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Original title: “Ebola vaccine trial begins in Sierra Leone - Press Release”

A senior CDC health official will give an overview of the Sierra Leone Trial to Introduce a Vaccine against Ebola (STRIVE). CDC is launching the trial in partnership with the Sierra Leone College of Medicine and Allied Health Sciences and the Ministry of Health and Sanitation.

Original title: “Launch of STRIVE Ebola Vaccine Trial - Media Advisory”

One year after the Centers for Disease Control and Prevention began the largest international emergency response in agency history, the goal is the same: Get to zero new Ebola cases in West Africa.

Original title: “Ebola in West Africa: The Importance of "Getting to Zero" - Press Release”

CDC continues to investigate potential Ebola exposure among individuals in Sierra Leone, including several American citizens, following the identification of an American volunteer healthcare worker in Sierra Leone who tested positive for Ebola virus.

Original title: “Update: CDC investigating potential exposures of American citizens to Ebola in West Africa - Media Statement”

On March 13, an American volunteer healthcare worker in Sierra Leone who tested positive for Ebola virus returned to the U.S. by medevac and was admitted to the NIH Clinical Center for care and treatment.

Original title: “CDC investigating potential exposures of American citizens to Ebola in West Africa - Media Statement”

The Rapid Isolation and Treatment of Ebola (RITE) strategy is helping to end the Ebola epidemic in Liberia, according to new data reported in this week's Morbidity and Mortality Weekly Report (MMWR). The strategy-a rapid, coordinated response to Ebola cases in remote areas-is now being used in Sierra Leone and Guinea.

Original title: “Ebola containment strategy succeeding in Liberia - Press Release”

The Centers for Disease Control and Prevention (CDC) has completed an internal investigation of an incident that occurred in December within the agency's Ebola virus laboratory, which resulted in no illness and was unlikely to have involved an exposure to live Ebola virus.

Original title: “CDC Releases Report on Recent Lab Incident - Media Statement”

On Tuesday, January 6, 2015, the Centers for Disease Control and Prevention (CDC) and the Department of Homeland Security (DHS) will remove Mali from the list of Ebola-affected nations subject to enhanced visa and port-of-entry screening.

Original title: “Enhanced Airport Entry Screening To End for Travelers from Mali to the United States - Press Release”

The Centers for Disease Control and Prevention is reporting today that a small amount of material from an Ebola virus experiment that was securely transported from a Select-Agent-approved BSL-4 lab to a Select-Agent-approved BSL-2 lab may have contained live virus.

Original title: “Lab Safety Report on Ebola Virus Transfer - Media Statement”

After more than a year of Ebola transmission in Guinea and more than 7 months of transmission in Liberia and Sierra Leone, there is still much to be done to stop the world's first Ebola epidemic, CDC director Tom Frieden, M.D., M.P.H reported from his second visit to the three affected nations.

Original title: “Ebola epidemic continues to spread, requiring intensified effort - Press Release”

This CDC media telebriefing included a public health assessment of the current status of the Ebola outbreak in West Africa.

Original title: “Transcript for CDC Telebriefing: Update on the CDC Response to the Ebola Outbreak in West Africa - December 22, 2014 - Transcript”

Media telebriefing will include a public health assessment of the current status of the Ebola outbreak in West Africa.

Original title: “Update on the CDC Response to the Ebola Outbreak in West Africa: December 22, 2014 - Media Advisory”

It's been an unprecedented year for the Centers for Disease Control and Prevention (CDC), as America's public health agency continues its emergency response to the most complex Ebola epidemic in history. Ebola, however, is far from the only critical mission CDC undertook in 2014.

Original title: “CDC Year in Review: "Mission: Critical" - Press Release”

The case fatality rate in West Africa's ongoing Ebola epidemic - estimates range from 60 percent to 70 percent of those hospitalized - hides a hopeful statistic: the fact that many Ebola patients survive. There now are thousands of Ebola survivors.

Original title: “Supporting West African Ebola Survivors - Press Release”