COVID-19 (Coronavirus Disease 2019) is a contagious illness caused by the SARS-CoV-2 virus. First identified in December 2019 in Wuhan, China, it spread rapidly, resulting in a global pandemic. Though there is no single medicine that “cures” COVID-19, a combination of early diagnosis, proper medical care, and preventive measures has significantly improved patient outcomes. Leading Coronavirus Treatment Hospitals in Chennai are equipped with advanced facilities and expert care to manage and control the spread of the virus effectively.
At VS Hospital, we remain committed to providing accurate information, timely diagnostics, and advanced care to manage and control COVID-19 cases effectively
What is the new COVID variant?
A newly identified COVID-19 subvariant known as NB.1.8.1 has been classified as a “variant under monitoring” by the World Health Organization (WHO). Initially detected in China in January 2025, the variant has now surfaced in multiple countries, including the United States, where confirmed cases have appeared in states such as California, New York, Virginia, and Washington—primarily among international travelers entering through major airports.
NB.1.8.1 is part of the Omicron family, closely linked to the JN.1 lineage. Its emergence has coincided with an increase in COVID-19 cases across various global regions, including Southeast Asia, the eastern Mediterranean, and the western Pacific. However, the WHO currently considers the overall public health threat posed by NB.1.8.1 to be low. Importantly, current vaccines remain effective in preventing serious illness linked to this variant.
Current COVID-19 Symptoms (as of May 2025):
Recent variants of COVID-19 show a range of mild to moderate symptoms, including:
• Fever or chills
• Cough (with or without phlegm)
• Sore throat
• Nasal congestion or runny nose
• Fatigue and muscle aches
• Headache
• Nausea, vomiting, or diarrhea
• Loss of taste or smell (less common in newer variants)
Diagnosis at VS Hospital
We provide all major testing services for COVID-19, including:
1. RT-PCR Test
• Gold standard for accuracy
• Detects the virus’s genetic material
• Results available within 6–24 hours
2. Rapid Antigen Test
• Quick results in 15–30 minutes
• Ideal for screening, though less sensitive than RT-PCR
3. Chest CT Scan (for advanced symptoms)
• Helps detect lung involvement in moderate to severe cases
4. Antibody Test
• Checks past infection or immune response
• Not for diagnosing active cases
When to Get Tested?
• If you experience symptoms like fever, cough, sore throat, or fatigue
• If you’ve had close contact with a confirmed case
• For travel, surgery, or hospitalization as per protocols
Home Test Kits are available but should be confirmed with lab RT-PCR in case of positive results or persistent symptoms.
Treatment and Management at VS Hospital
1. Antiviral Medication
• Paxlovid and similar treatments are used for high-risk patients
• Most effective when started within 5–7 days of symptoms
2. Symptomatic Care
• Rest, hydration, and medications for fever or cold
• Most mild cases recover without hospital care
3. Hospital Support
• Oxygen therapy and steroids for patients with breathing difficulty or severe symptoms
• Continuous monitoring for patients with chronic illnesses
Causes of COVID-19 Spread and Severity (Original & New Variants)
1. Viral Aerosol Presence in the Air: Tiny virus-loaded droplets released during speech, sneezing, or coughing can float in the air, particularly in spaces with inadequate airflow, making it easier for others nearby to breathe in the infection.
2. Silent Spread from Symptom-Free Individuals: People who carry the virus without showing visible signs often interact normally with others, unknowingly transmitting the disease during the phase when they are most contagious.
3. Evolution of Viral Strains: Changes in the virus’s genetic makeup—like those observed in NB.1.8.1—can make it more resistant to immunity and help it move more easily through populations, even among previously infected or vaccinated individuals.
4. Overcrowded and Enclosed Spaces: Busy locations with limited ventilation, such as buses, offices, or event venues, offer ideal conditions for the virus to jump from person to person quickly.
5. Gaps in Immunization Coverage: When large sections of the population are not fully vaccinated or have missed recommended booster shots, the community becomes more susceptible, especially among high-risk groups with existing health concerns.
Preventive Measures: Your Role in Staying Safe
• Vaccination: Stay updated with boosters as advised
• Masks: Especially in crowded or closed spaces
• Hand Hygiene: Regular washing or sanitizing
• Social Distancing: Keep safe distance in high-risk zones
• Stay Informed: Follow updates from trusted health authorities.
Symptoms: Then vs Now
Original Strain (2019–2020)
• High fever
• Dry cough
• Shortness of breath
• Loss of taste and smell (very common)
• Chest pain, fatigue
Newer Variants (2023–2024)
• Sore throat
• Mild fever
• Sneezing and runny nose
• Headache and fatigue
• Occasional gastrointestinal symptoms
• Loss of smell/taste is now less frequent
Final Note from VS Hospital
COVID-19 remains a manageable illness when addressed early and with proper care. At VS Hospital, our team of experienced doctors, modern diagnostic facilities, and dedicated COVID-19 protocols ensure every patient receives safe, evidence-based treatment.
Remember: Vaccination, timely testing, and following public health guidelines are the most effective ways to protect yourself and your loved ones.