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Infectious Diseases

Updated 04 July 2014

Second MERS case identified in US

The second MERS patient in the US had been a health care worker in Saudi Arabia, the epicentre of the outbreak.

A second case of MERS – the potentially fatal respiratory virus that initially surfaced in the Middle East two years ago – has been detected in the United States, federal health officials said Monday.

Like the first US case identified earlier this month, the second case involved a health care provider who lived and worked in Saudi Arabia, the epicentre of the MERS outbreak. The second patient was being treated in an Orlando, Florida, area hospital and was said to be doing well.

Read: MERS virus found in camels

The health risk to the general public is very low, federal officials said, because the virus is only passed through close contact.

The second patient – who was not identified – worked in a facility in Saudi Arabia that cared for MERS patients. The patient was visiting family in central Florida before entering the hospital. The patient had travelled from Saudi Arabia to London to Boston to Atlanta, before reaching Florida, officials said.

The patient felt unwell on a flight to London, but sought care in Orlando. The US Centres for Disease Control and Prevention said it has notified all passengers on the affected flights to be on the lookout for symptoms.

Symptoms of MERS

MERS symptoms typically include shortness of breath, coughing and fever.

However, Dr Anne Schuchat, director of the US National Centre for Immunisation and Respiratory Diseases, said that it is "likely that if you have not already developed symptoms you are not likely to."

CDC director Dr Tom Frieden said his agency was contacting the airlines on which the patient travelled, but the risk to people travelling with a person infected with MERS is unknown.

CDC officials cautioned that while the patient felt the symptoms of the MERS virus while travelling from Saudi Arabia, it wasn't clear if the patient was infectious at that time.

Read: MERS coronavirus has potential to cause pandemic

Worldwide numbers


There are 538 confirmed cases of MERS worldwide, and 145 deaths. The vast majority of cases and deaths – 450 and 118, respectively – have occurred in Saudi Arabia.

One-fifth of all MERS cases have occurred among health care workers, Schuchat said.

Frieden added, "We would not be surprised to see more cases, but we are not predicting there will be."

On April 28, another US health care worker who'd had close contact with MERS patients in Saudi Arabia was admitted to an Indiana hospital and was later diagnosed with the respiratory ailment.

He was released from Community Hospital in Munster on Friday.

How does this virus spread?

MERS kills about one-quarter of the people who contract the virus, Schuchat said at a May 2 news conference.

In some countries, the virus has spread from person to person through close contact, such as caring for or living with an infected person. But, there's currently no evidence of sustained spread of MERS in general settings, the CDC has said.

Read: Jump in MERS cases in Saudi Arabia

The first patient took a plane on April 24 from Riyadh, Saudi Arabia, to London, then from London to Chicago. He then took a bus from Chicago to Indiana. On April 27, he started experiencing "respiratory symptoms", and was admitted to Community Hospital the next day, the CDC said.

Camels have been identified as carriers of MERS, but it's not known how the virus is being spread to people.


Read more:

Respiratory disease strikes again in Middle East
4 new Saudi cases of MERS virus, one fatal
 

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