Yes — it can be normal for low-grade fever (especially at night) to persist during the recovery phase, given your father’s clinical picture.
Based on the information:
• He had significant bilateral lung inflammation (likely viral or post-viral pneumonitis)
• Oxygen levels are clearly improving
• Infection markers (WBC, platelets) are normal
• Cultures for dengue, typhoid, urine, blood are negative
•
Liver enzymes and bilirubin are elevated but trending down
• ESR is high, which reflects ongoing inflammation, not necessarily active infection
In such cases, post-infectious inflammatory fever is common. The body’s immune system remains activated even after the infection is controlled, leading to:
• Evening or night-time fever
• Fatigue and weakness
• Raised ESR
This can last 2–4 weeks, sometimes longer, especially after severe lung involvement.
Importantly, the pattern you describe — fever settling with paracetamol, improving oxygen, stable vitals — supports recovery rather than worsening disease.
Next Steps
1. Continue close monitoring, not panic treatment:
• Daily temperature chart
• Oxygen saturation (especially at rest and on walking)
2. Repeat labs after 7–10 days (as advised by the treating doctor):
• LFTs
• ESR /
CRP
• Blood
sugar monitoring (steroid-induced hyperglycemia is common)
3. Chest follow-up (X-ray or CT only if symptoms worsen)
4. Seek re-evaluation urgently if:
• Fever spikes >102°F
• Oxygen drops again
• New cough, breathlessness, chest pain, confusion
• Jaundice worsens
At this point, aggressive antibiotics or antivirals are not usually needed unless new evidence appears.
Health Tips
• Encourage adequate hydration and protein intake (
albumin is slightly low)
• Light breathing exercises and incentive spirometry help lung recovery
• Avoid alcohol and heavy fatty food (fatty
liver + raised LFTs)
• Control sugars strictly for now — steroid-related spikes usually settle
• Ensure good sleep; fever often rises at night due to normal immune rhythms
From what you’ve shared, your father’s course looks like a gradual but genuine recovery, not a missed infection. Persistent low-grade fever during healing from lung inflammation is well-recognized and usually self-limiting. You’re doing the right thing by observing trends rather than reacting to single readings.
If you’d like, I can also help you understand how long lung recovery typically takes and what signs truly indicate a setback versus normal healing.