According to AIIMS authorities, the patient appears to have been suffering from Crimean-Congo Haemorrhagic Fever (CCHF) and not Ebola.
"It appears to be a case of CCHF, which is also highly contagious and can spread with close contact with the blood, secretions or other bodily fluids of infected persons.
"It is unlikely that he was suffering from Ebola as he doesn't have any history of travelling," said a doctor at the premier hospital here.
The patient was referred to AIIMS by a private hospital in Jodhpur in Rajasthan and was admitted to the department of medicine yesterday with symptoms of high-grade fever and vomiting.
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Symptoms of haemorrhagic fevers are high temperature, headache, muscle pain, diarrhoea, vomiting, stomach pain and external and internal bleeding.
"As the patient was not treated in the isolation ward, the AIIMS staff are anxious about the outcome of the tests," said the doctor.