'ongoing fever' is a correct and usable phrase in written English.
You can use it to refer to a fever that has been present for an extended period of time, and does not appear to be improving. For example, "The patient has been suffering from an ongoing fever for over a week now."
The ongoing fever and persistent metabolic disturbances led to an escalation of therapy.
On day 16, he had ongoing fever with right-sided facial pain and swelling.
Despite anti-TB treatment, the patient's condition deteriorated, with ongoing fever and confused mental state.
The man sought medical care that day at Jilin University Third Hospital and returned to the hospital on February 16, 17, and 19 with ongoing fever.
62 Patients who have already declared themselves as IVIG-resistant, that is, with ongoing fever, and/or persistent inflammation or clinical signs ≥48 h after receiving IVIG as a single dose of 2 g/kg.
Empiric amikacin 500 mg, 7.5 mg/kg 8-hourly was added on day 6 to broaden antibacterial coverage for potential multi-drug resistant gram-negative bacteria given his ongoing fever despite negative blood and urine cultures.
If these 3 specimens were subsequently found to be culture negative then no further specimens were taken unless clinically indicated i.e. a worsening chest X-ray, ongoing fevers, continued sputum production.
The patient deteriorated with ongoing fevers, worsening pain and increasing WCC up to 58.4 × 10/L.
However, due to ongoing fevers the patient underwent a transthoracic echocardiogram (the patient was initially unable to tolerate the transesophageal approach) that raised the possibility of vegetations on the mitral valve and VSD patch.
About 7,000 athletes from 71 countries were expected to travel to Delhi, but several have pulled out, citing security fears, concerns over the accommodation and the ongoing dengue fever problem – worsened by large pools of stagnant water that have proved a breeding ground for mosquitos – as reasons enough to stay at home.
During July 2004, the patient had ongoing high fever and aplasia of bone marrow with unclear etiology.
