Chicken Pox Chances of Happening Again
Med J Armed Forces India. 2022 Jul; 71(Suppl one): S214–S216.
Reinfection of Varicella zoster in a vaccinated adult
Mona Dubey
aResident, Department of Community Medicine, Armed Forces Medical College, Pune 411040, India
Gurpreet Singh
aResident, Section of Community Medicine, Armed Forces Medical College, Pune 411040, India
V.K. Bhatti
bCol Wellness, HQ Northern Control, C/o 56 APO, India
A. Mahen
cDPMO, HQ Western Air Control, New Delhi, India
Renuka Kunte
dManager Wellness (Air Forcefulness), Army HQ, New Delhi, India
S.M. Katara
eResident (Obst & Gynae), Base Infirmary, Delhi Cantt, Bharat
Received 2013 Jul 27; Accepted 2022 Mar 17.
Keywords: Chickenpox, Varicella zoster, Varicella vaccine, Reinfection
Introduction
Chickenpox is an astute, highly infectious disease acquired past Varicella-zoster virus. Approximately ninety% of cases occur in children and lesser in adults. Every bit per literature 55 percent of Varicella-associated deaths occur amid adults.i I attack gives durable immunity and second attacks are rare.ane People who already had chickenpox and get it once again – is known equally "reinfection".2 If this happens, a milder form of the affliction normally occurs, with fewer symptoms. Diagnosis is ordinarily made on clinical grounds, based on rash characteristics and on epidemiologic features, such as contact with other Varicella cases.2 Laboratory tests are available to confirm diagnosis of Varicella, assess allowed status, and genotype of VZV strains. Varicella vaccine (OKA strain) is bachelor in India.
However, reports of Varicella outbreaks in highly immunized groups in Japan and USA have made effectiveness of Varicella vaccine questionable. We present a case of Varicella in a young developed patient who gave history of chickenpox in childhood and was previously immunized with Varicella vaccine, withal manifested a full blown affliction.
Instance written report
A nineteen-twelvemonth-one-time male person patient, presented with skin rash of two days duration. He gave history of having fever on day one of advent of skin rash. He denied history of any drug intake, respiratory or gastrointestinal symptoms prior to the onset of pare rash. He gave history of contact with a known instance of chickenpox during his go out, 17 days before the onset of nowadays symptoms. He gave history that he had chickenpox at 5 years of age and also that he was vaccinated with 2 doses of Varicella vaccine at the historic period of fifteen years. Same was further confirmed by his mother who is health care personnel past profession. On general physical examination on the solar day of presentation he had mild fever. Dermatological examination showed numerous symmetrical pleomorphic pare lesions in diverse stages of development like macules, papules, vesicles, pustules (Fig. 1) distributed over the scalp face, neck, chest and abdomen (Fig. ii). Systemic examination did not reveal any abnormality. He was diagnosed clinically equally a example of Varicella and managed with calamine balm, antipyretics & antiviral (Tab acyclovir). He recovered in vii days without whatsoever complication. Polymerase chain reaction amplification and subsequent DNA sequencing of the sample from the fresh fluid filled lesions confirmed the virus genome to be VZV of wild type.
Shut view of feature lesions.
Distribution of rash on trunk.
Discussion
This was a clinically and laboratory confirmed example of Varicella in a patient with prior history of similar episode and vaccination. Fever and rash appearing on the same twenty-four hour period is characteristic feature of Varicella infection. It is well known that natural immunity post-obit chickenpox is largely protective against reinfection. Severe symptoms were perchance prevented in this case considering of residual antibodies due to prior infection.2 Unfortunately, it was non possible to check his VZV antibody titers in this case. Although reinfection of chickenpox is difficult to prove, a study from Nihon in the yr 2002 reported that 13% of children presenting with chickenpox had experienced a well-documented previous episode, thus suggesting that clinical recurrence may be more mutual than previously idea.iii however at that place are no population-based information on the frequency of reported second infections with Varicella in Indian population.
Quantum Varicella is an infection with wild-type VZV occurring in individuals after 42 days of Varicella vaccination characterized by shorter disease and fewer than 50 skin lesions which are predominantly maculopapular rather than vesicular. Nonetheless, 25%–30% of persons vaccinated with 1 dose with breakthrough Varicella have clinical features typical of Varicella in unvaccinated people.2 Since the clinical features of quantum Varicella are often mild, it can be difficult to brand a diagnosis on clinical presentation alone. There is express information most breakthrough Varicella in persons who accept received ii doses of vaccine compared to persons who have received a single dose of Varicella vaccine.4 This case presented with a full blown clinical flick despite previous vaccination. Studies take demonstrated vaccine effectiveness in the range of 85%–90% for prevention of clinical disease and 100% for astringent disease.4 A chickenpox outbreak was reported from a school at Oregon, USA in 2000 in which 97% of students without a prior history of chickenpox were vaccinated. Students vaccinated more than five years before the outbreak were at run a risk for breakthrough disease. Vaccine effectiveness was constitute to exist 72% (95% confidence interval: 3%–87%).iii
New variants of VZV have also been reported recently, including VZV-MSP, isolated in St. Paul–Minneapolis, MN, and VZV-BC, isolated in British Columbia.five,half dozen We do not know whether there is a mutant strain of VZV in India; thus this example could farther assist us to report epidemiological transition of VZV infection. There are no reported cases of reinfection in Bharat along with quantum Varicella in to the best of our cognition. Widespread use of vaccine is likely to change the epidemiological blueprint of this affliction, shifting information technology from early on babyhood to adolescents or immature adults.1
There is a need to carry out studies to establish the effect of Varicella vaccination and reinfection on the disease design in Indian population.
Conflicts of interest
All authors accept none to declare.
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Articles from Medical Journal, Military India are provided hither courtesy of Elsevier
Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4529600/
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