Pharmacy & Illness Insights

JN1 and HV1 SARS-CoV-2 Variants: A Detailed Look


JN1 and HV1 SARS-CoV-2 Variants: A Detailed Look

Origin and First Detection:

JN1: Emerged as a descendant of the BA.2.86 sub-variant, possibly originating in the United States. It was first detected in September 2023.

HV1: A sub-lineage of Omicron XBB, with roots in EG.5. First appeared in mid-summer 2023 and quickly gained a significant foothold in the US.


Both variants present with the typical COVID-19 symptoms, including:




Shortness of breath

Muscle aches

Loss of taste or smell

Sore throat

Runny or stuffy nose

Nausea or vomiting


Spread Rate:

HV1: Currently the dominant variant in the US, responsible for nearly 20% of cases. Its rapid rise suggests high transmissibility.

JN1: While present in 12 countries, including the UK, US, and Spain, it represents a smaller share of cases compared to HV1. However, its parent lineage (BA.2.86) has shown signs of increased transmissibility, raising concerns about JN1’s potential.

Main Affected Body Part:

Like other SARS-CoV-2 variants, JN1 and HV1 primarily attack the respiratory system, causing damage to the lungs and airways.

Treatment: As per Doctors Advise Only.

Treatment recommendations for specific variants are not typically issued. The WHO and CDC advise following standard COVID-19 treatment protocols, including:

Supportive care (rest, fluids, pain management)

Antiviral medications for high-risk patients

Oxygen therapy for severe cases

Precautions and Guidelines:


Emphasizes continued vaccination and booster shots, particularly bivalent vaccines specifically targeting Omicron.

Promotes public health measures like mask-wearing, physical distancing, and hand hygiene.

Encourages surveillance and data sharing to monitor variant evolution.


Recommends staying up-to-date on vaccinations and boosters.

Advises wearing masks in indoor public settings, especially those with high community transmission.

Encourages testing and isolation for symptomatic individuals.

Promotes good ventilation and cough etiquette.

Public Advice:

Get vaccinated and boosted as advised by your local health authorities.

Practice good hygiene and wear masks in crowded or indoor settings.

Stay home and isolate if you experience symptoms.

Get tested for COVID-19 if exposed or symptomatic.

Follow official advisories and updates from the WHO and CDC.

Additional Information:

Both JN1 and HV1 possess mutations that might enable them to evade the immune system to some extent, potentially leading to reinfections.

The effectiveness of existing vaccines against these variants is still under investigation, but initial data suggests some degree of protection.

Scientists continue to monitor these variants and their potential impact on vaccine efficacy, transmissibility, and disease severity.

Remember, staying informed, taking precautions, and adhering to public health guidelines are crucial in mitigating the spread of COVID-19 and emerging variants like JN1 and HV1.

CDC Update

Whats New

Indian Express

Leave a Reply

Your email address will not be published. Required fields are marked *