Can You Catch COVID-19 Twice?

Studying Time: 3 minutes


Nations everywhere in the world have been preventing in opposition to the novel coronavirus utilizing preventive measures reminiscent of social distancing and lockdowns. After India being in lockdown for nearly half a yr, sure relaxations have progressively been applied to renew financial actions. 

Amidst the rising variety of new circumstances each day, the primary documented case of reinfection with Covid-19 was reported in a 33-year-old man in Hong Kong virtually 4 ½ months after he recovered from his first an infection. Nearer to residence, just lately there have been experiences of reinfection circumstances in Bangalore, Delhi and Mumbai, particularly amongst healthcare employees. Researchers in India have additionally reported few circumstances with asymptomatic reinfection of Covid-19.

What’s COVID-19 reinfection?

In easy phrases, reinfection signifies that an individual was contaminated as soon as, cleared the an infection after which the particular person was contaminated once more. 

Preliminary proof means that usually, in case of an an infection, the COVID Immunoglobulin G (IgG) antibody is examined constructive after 2-Three weeks of the an infection. Nonetheless, in sure circumstances, the antibody exams adverse, which signifies that the particular person doesn’t develop immunity after an infection. One other risk might be that the antibodies are short-lived and disappear shortly, thereby making the affected person inclined to reinfection. Thus, reinfection circumstances imply that the antibodies will not be produced by each affected person or in the event that they do develop, they could not final lengthy sufficient, and subsequently, permitting the virus to enter the physique and trigger the illness once more.


The World Well being Organisation (WHO) has acknowledged that there’s at present no proof that folks, who’ve recovered from COVID-19 and have antibodies, are shielded from a second an infection.

What are the signs of reinfection?

Although the affected person from Hong Kong skilled a cough, sore throat, fever and headache throughout his first an infection, he was asymptomatic throughout his second an infection. Quite the opposite, a 25-year-old man within the US developed respiration difficulties and pneumonia after getting re-infected with COVID-19, regardless of having solely gentle signs throughout his first an infection.

How is reinfection established?

Though there might be an opportunity that the virus was fairly low sufficient to go undetected and seem adverse on a check, solely to extend and be picked up within the subsequent check, the query arises as as to if the identical virus has resurfaced once more or is the present an infection prompted resulting from one other viral occasion.

Figuring out reinfection is sort of a difficult course of. Genetic materials gathered from the primary and second swabs of the affected person have to be analyzed and sequenced through the use of genetic engineering. If there are variations that present up throughout sequencing, it signifies that reinfection has occurred. If the sequences match, then it signifies that there might be a relapse.

As of now, well being officers in India are of the opinion that reinfection with COVID-19 could be very uncommon. Observations until date have proven that solely gentle infections have occurred and subsequently this subject isn’t of great concern now.

How may this influence a vaccine?

As per early-stage experiences from vaccine scientific trials being carried out worldwide, the vaccine produces much less immunity than an an infection. There may be nonetheless plenty of testing and information that’s required so as to verify the extent of immunity that the vaccine would supply. Nonetheless, we might require booster doses so as to preserve immunity and keep away from an infection.


How will this have an effect on herd immunity?

Herd immunity relies on the precept {that a} illness may be eradicated if a lot of the inhabitants is resistant to it. With circumstances of reinfection being reported and confirmed, researchers are more and more sceptical about attaining herd immunity since it might be unattainable to attain. As soon as once more, extra analysis is required so as to verify this truth.

What ought to I do as soon as I’ve recovered from Covid-19?

Restoration from COVID-19 doesn’t imply that you’re resistant to the illness. You need to keep away from getting complacent and proceed sustaining hand hygiene, carrying masks and making certain social distancing even after restoration.

Since COVID-19 is a comparatively new illness, there may be not a lot information obtainable so as to perceive the form of long-term immunity that sufferers develop after they’ve recovered from the an infection.


With respect to the novel coronavirus and COVID-19, loads remains to be left to be realized. Analysis remains to be underway so as to perceive numerous features of the illness and its menace of reinfection in addition to the vaccine and immunity.  In all circumstances, well being officers have suggested that the probabilities of reinfection are uncommon and never a trigger of great concern. 

The publish Can You Catch COVID-19 Twice? appeared first on PharmEasy Weblog.