海角大神

A scientist who was infected with聽Ebola聽while working for the World Health Organization in Sierra Leone has recovered and been discharged from a German hospital.

The University Medical Center Hamburg-Eppendorf says the unidentified man, who was brought to聽Germany聽in late August, left the hospital on Friday.

In a statement Saturday it said he was doing well and had returned to his home country.

WHO said the man from Senegal had been infected while working for the agency as a consultant in West Africa, which is experiencing the biggest聽Ebola聽outbreak on record.

Another patient who contracted聽Ebola聽in West Africa is being treated in Frankfurt. The unidentified Ugandan man who worked for an Italian aid group was brought there on Friday from Sierra Leone.

Reuters reports the worldwide death toll from the disease is聽3,439 people, the World Health Organization (WHO) said on Friday.

There had been 739 deaths in Guinea聽and 623 deaths in Sierra Leone by the end of Oct. 1, and 2,069 deaths in Liberia聽聽by Sept. 30, the data showed. There have also been eight deaths in Nigeria, the U.N. body said.

Overall, the WHO said there had been 7,492 ebola cases recorded.聽(Reporting by Tom Miles; Editing by Andrew Heavens).

Four US health care workers diagnosed with Ebola all survived after receiving treatment in the US. As聽海角大神 reported, this is not the first time a global pandemic has been averted.

As the US and the world ratchet up their humanitarian response to an outbreak President Obama has called 鈥渁 threat to global security,鈥� health authorities remind Americans that other diseases that threatened to spread even more easily have been kept in check in the recent past. Massive investments in public health funding, medical research, and containment strategies have played a major role in keeping diseases including SARS, avian flu, H1N1 (swine flu), and Ebola from gaining serious footholds in human populations, especially in the West.

For example:

• SARS, a pneumonia variant, threatened millions in 2003, but was thwarted when public health organizations, including the WHO, broke what鈥檚 called the 鈥渃hain of transmission鈥� that could have turned local outbreaks into a broader pandemic.
• In 2005, avian flu raised concerns about disease migration from fowl to humans, which could impact 20 percent of the world鈥檚 population. But human-to-human transmission of the variant never materialized, though 59 people died.
• The 2009 pandemic of H1N1 killed nearly 15,000 people worldwide but was stopped in the US in part by emergency productions of a vaccine. Global public health lessons learned from the 2005 avian flu also played a role in containing the pandemic, officials said.

Ebola is the newest threat. According to CDC models, Africa could witness 1.3 million cases of Ebola if nobody lifts a finger to help. Conversely, 聽the same models show that if Western and richer African nations manage to help get 70 percent of patients into care by December, the epidemic would be largely over by Jan. 20.

That鈥檚 the current trend line. "There is a regular and by now daily positive change in terms of what resources and capabilities countries are putting on the table," Gayle Smith, senior director of the National Security Council, told reporters this week

.