Omicron – The New Variant Of COVID-19: Risks And Safety Precautions

The SARS-CoV-2 COVID-19 pandemic brought the world to a standstill when it first spread across the globe at the beginning of 2020. Amidst lockdowns and strict travel restrictions, the virus mutated as it spread among more people. When finally it seemed like the worst was behind us (thanks to an extensive vaccination scheme), we got the news that there’s a new strain doing the rounds! Omicron strain is the latest mutation identified by scientists in South Africa.

Read to know more about the new strain of COVID-19 and how you can protect yourself from it. 

All About the Omicron Strain

• Scientists in South Africa reported the development of a new strain of the COVID-19 virus, called B.1.1.529, on November 24th, 2021. The World Health Organisation (WHO) named it Omicron, following the tradition of using Greek nomenclature to denote the strains of the virus. The strains before the Omicron were named alpha, beta, gamma, Delta variant, etc. The new variant (Omicron) has been named while skipping the two letters in the Greek alphabet ‘Nu’ and ‘Xi’. [1]
• When we talk about the origin story of the variant, experts from South Africa notified on 2nd December 2021 that the origin of Omicron was unknown. On the other hand, as per theories released by Livescience, the Omicron variant was believed to have possibly evolved in rodents. Whichever statement might be true, it can be said that not much is known about the Omicron variant and further studies are underway. But with the spread of the Omicron variant, researchers also shared thoughts of the COVID-19 virus becoming endemic. 
• The health implications of the Omicron strain are still being tested by scientists around the world, however, the number of positive COVID-19 tests in South Africa indicate that this new strain is potentially fast-spreading because the Omicron strain has a high number of mutations in the ‘spike protein’ associated with COVID-19. [2]
• It is essential to maintain safety protocols as the virus is already spreading in India and other nations like Israel, the United Kingdom, the US, Belgium, Botswana, Canada and Hong Kong. The WHO considers this as a Variant of Concern (VOC) for now and many countries gearing up to issue travel bans as a response to stop its spread. 

You should feel better within a couple of weeks after getting infected with covid and getting appropriate treatment, if your symptoms persist beyond 4-8 weeks, you should follow up with your doctor to rule out long covid.

Dr. Ashish Bajaj, M.B.B.S., M.D. in Clinical Pharmacology and Toxicology

How Does Omicron Affect Us?

• By now, you might be feeling quite gloomy after knowing that several subvariants and sublineages of Omicron have been confirmed in India. You might also wonder how these new variations affect you and their health implications. There are a lot of assumptions like getting affected by the Omicron strain is more likely for people who have already been affected by COVID-19 before. Only mild infections have been noticed among individuals affected by this strain. 
• There are concerns about sublineages of the Omicron strain having the ability to evade the immune system and cause breakthrough vaccine (infection after getting vaccinated). Whether the Omicron strain can trigger severe symptoms and effects will be confirmed only after further testing. For now, reinfection of individuals remains the most considerable risk.
• It’s too early to state anything specific about the characteristics or severity of the new subvariants. It is important to stay calm, not panic and follow all safety measures sincerely.

Are Sub Variants of Omicron a Cause of Concern?

Several subvariants of Omicron – BA.1, BA.1.1, BA.2, BA.2.75 and many more have been identified in different countries across the globe. It is important to understand that all of these subvariants or sublineages are of Omicron variant of Covid-19 which is classified as a Variant Of Concern (VoC) therefore all these subvariants are also categorised as VoC. With the ongoing studies, more information on the rate of transmission and severity of these subvariants can be gained.  

Omicron is a variant of COVID virus due to mutation. Omicron shows a 13-fold increase in viral infectivity and is 2.8 times more infectious than the Delta variant. That’s why it’s a variant of concern.

Dr. M.G. Kartheeka, MBBS, MD(Pediatrics)

How is Omicron Different from the Delta Variant?

The delta variant of COVID-19 was discovered first in India and was responsible for the 2nd wave of the pandemic in the country. According to current studies, the Omicron variant has many more mutations in its spike protein than the delta variant. It is assumed that this variant is more transmissible than the delta variant, which can cause concern.

The delta variant of the virus is responsible for heavy infections and mortality. The delta variant of the virus is a lethal variant and current reports are yet to confirm the severity of illness caused by the Omicron variant. The reinfection and transmissibility rates are predicted to be much higher in the Omicron variant. But, more studies and data are needed to understand this variant better.

Also Read: Omicron vs Other Variants

Symptoms of the Omicron Sub-variants

There have been no reports of any unusual symptoms noticed in people affected by the omicron subvariants so far. Thus, the current scenario suggests that symptoms of the Omicron sub-variant can be the same as what was being noticed in the earlier strains of the virus. Some of the most common symptoms of COVID-19 include – fever, weakness, loss of smell, shortness of breath, chest pain and loss of taste, sore throat, cough, stomach ache and diarrhea. A person may present with a few or more of the symptoms mentioned. We are yet to receive confirmatory data on the severity and symptoms of the new subvariants of Omicron. [4]

Which Tests can Detect the Omicron Strains?

The SARS-CoV-2 RT- PCR and Rapid antigen test (RAT) for Covid-19 can detect COVID-19 infection even with the new virus strains reported at present. This will not confirm the type of variant or sub-variant samples of suspected people reported positive by RT-PCR test are sent for genome sequencing for confirmation of the Variant type.

What Are the Precautions for Omicron Virus?

The best way to stay safe currently is by following all WHO and Government-mandated safety measures for Omicron –

1. Get vaccinated if you haven’t.
2. Maintain physical distancing, 
3. Limit your travel outside as much as possible and avoid crowding at all costs.
4. Wear a mask when stepping out or meeting any outsider.
5. Follow hand hygiene and respiratory etiquette.
6. Do not ignore any signs of illness (fever, weakness, sore throat) and consult your doctor immediately.

BA.2.75 is said to have a higher transmission rate than other Omicron sub-lineages. Surveillance for the new sub-variants has been increased in all countries, including India, to monitor the spread. Symptoms are more or less similar for different sub-variants. We must be aware and safe by following Covid’s appropriate behaviour to the best possible.

Conclusion

The Omicron sub-variants are spreading rapidly but on a positive note, we have a strong vaccination drive in place. People who have been affected by severe COVID-19 previously or those with other comorbidities need to stay extra cautious as the rate of reinfection is thought to be high in some of the new subvariants. If you follow all safety protocols and maintain good hygiene, you can lower the risk of infection from the new variant. Be responsible for limiting the spread of the virus and encourage the maintenance of safety protocols among your peers.

Also Read: Do Existing Vaccines Work Against Omicron?

Frequently Asked Questions (FAQs)

References:

1. https://www.who.int/en/activities/tracking-SARS-CoV-2-variants/
2. https://www.nature.com/articles/d41586-021-03552-w
3. https://www.cdc.gov/coronavirus/2019-ncov/science/science-briefs/vaccine-induced-immunity.html
4. https://www.who.int/news/item/26-11-2021-classification-of-omicron-(b.1.1.529)-sars-cov-2-variant-of-concern
5. https://www.mohfw.gov.in/pdf/GuidelinesforInternationalarrival28112021.pdf

Disclaimer: The information provided here is for educational/awareness purposes only and is not intended to be a substitute for medical treatment by a healthcare professional and should not be relied upon to diagnose or treat any medical condition. The reader should consult a registered medical practitioner to determine the appropriateness of the information before consuming any medication. PharmEasy does not provide any guarantee or warranty (express or implied) regarding the accuracy, adequacy, completeness, legality, reliability, or usefulness of the information; and disclaims any liability arising thereof.

Links and product recommendations in the information provided here are advertisements of third-party products available on the website. PharmEasy does not make any representation of the accuracy or suitability of such products/services. Advertisements do not influence the editorial decisions or content. The information in this blog is subject to change without notice. The authors and administrators reserve the right to modify, add, or remove content without notification. It is your responsibility to review this disclaimer regularly for any changes.