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  Table of Contents  
Year : 2021  |  Volume : 12  |  Issue : 7  |  Page : 24-30  

Updates on management of leprosy in the context of COVID-19 pandemic: Recommendations by IADVL SIG Leprosy

1 Department of Dermatology, Venereology and Leprology, All India Institute of Medial Sciences, Jodhpur, Rajasthan, India
2 Department of Dermatology, All India Institute of Medical Sciences, Gorakhpur, Uttar Pradesh, India
3 Department of Dermatology, Venereology and Leprology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
4 Institute for Specialized Services in Leprosy (INSSIL), Nireekshana ACET, Hyderabad, Telangana, India
5 Department of Dermatology, All India Institute of Medial Sciences, Patna, Bihar, India
6 Department of Dermatology, Smt NHL Municipal Medical College, Ahmedabad, Gujarat, India
7 Department of Dermatology, King George's Medical University, Lucknow, Uttar Pradesh, India
8 Department of Dermatology, Christian Medical College, Vellore, Tamil Nadu, India
9 Department of Dermatology, AIIMS, Raipur, Chhattisgarh, India
10 Department of Dermatology, SVS Medical College, Mahbubnagar, Telangana, India
11 Department of Dermatology, JSS Medical College, Mysore, Karnataka, India
12 Department of Dermatology, INHS Asvini, Mumbai, Maharashtra, India

Date of Submission10-Aug-2021
Date of Decision20-Sep-2021
Date of Acceptance21-Sep-2021
Date of Web Publication25-Nov-2021

Correspondence Address:
Dr. Tarun Narang
Department of Dermatology, Venereology and Leprology, Postgraduate Institute of Medical Education and Research, Chandigarh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/idoj.idoj_513_21

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The Special Interest Group (SIG) on leprosy thought it to be prudent to revisit its previous practice recommendations through this update. During this period, the pandemic course shifted to a 'second wave' riding on the 'delta variant'. While the number of cases increased manifold, so did the research on all aspects of the disease. Introduction of vaccination and data from various drug trials have an impact on current best practices on management of diseases including leprosy. The beneficial results of using steroids in management of COVID-19, gives elbow room regarding its usage in conditions like lepra reactions. On the other hand, the increase in cases of Mucormycosis again underlines applying due caution while recommending immunosuppressants to a patient already suffering from COVID-19. This recommendation update from SIG leprosy reflects current understanding about managing leprosy while the dynamic pandemic continues with its ebbs and flows.

Keywords: Guidelines, leprosy, pandemic

How to cite this article:
Bhardwaj A, Gupta SK, Narang T, Suneetha S, Pradhan S, Agarwal P, Suvirya S, Gupta A, Chhabra N, Rao AG, Ashwini P K, Jandhyala S, Rathod S, Rao P N, Dogra S. Updates on management of leprosy in the context of COVID-19 pandemic: Recommendations by IADVL SIG Leprosy. Indian Dermatol Online J 2021;12, Suppl S1:24-30

How to cite this URL:
Bhardwaj A, Gupta SK, Narang T, Suneetha S, Pradhan S, Agarwal P, Suvirya S, Gupta A, Chhabra N, Rao AG, Ashwini P K, Jandhyala S, Rathod S, Rao P N, Dogra S. Updates on management of leprosy in the context of COVID-19 pandemic: Recommendations by IADVL SIG Leprosy. Indian Dermatol Online J [serial online] 2021 [cited 2022 Jan 24];12, Suppl S1:24-30. Available from: https://www.idoj.in/text.asp?2021/12/7/24/331156

   Background Top

The Indian Association of Dermatologists, Venereologists and Leprologists (IADVL) Special Interest Group (SIG) on leprosy, under the aegis of the IADVL Academy, published recommendations for the management of leprosy in the context of the coronavirus disease (COVID-19) pandemic based on available evidence and expert opinion in 2020.[1] These were deliberated and brought out early in the pandemic to benefit dermatologists and leprologists, regarding the management of leprosy cases with the advent of this novel virus. A couple of factors, that is, the plethora of data published regarding COVID-19 in the past year and the unprecedented surge which India witnessed, the SIG-leprosy sought to revisit these recommendations. There is wide speculation about a third or maybe multiple waves in this pandemic, thus we expect that the new recommendation will remain relevant for some time. (Level of Evidence VII)

What is the significance of this surge for leprosy care in India?

The second wave of COVID-19 pandemic in India reported a peak of 4,01,993 on 30th April and the country needed to channel all health resources to cope with this surge.[2] Thus, all other diseases and neglected tropical diseases, including leprosy, would receive reduced attention. In a recently published multicentric (multicountry) questionnaire-based study during the first wave, the investigators found the suspension of the following health services like diagnostic (5%), reconstructive surgery (87%), active case detection (76.9%), and chemoprophylaxis (66.7%),[3] thus confirming the widespread adverse impact of coronavirus disease (COVID-19) on healthcare delivery of leprosy.

From a bird's eye view, the factors impacting leprosy care during this pandemic include poor access to care, susceptibility to COVID-19 due to use of steroids for management of reactions, unemployment, poverty, overcrowding, stretched healthcare systems, reinforced isolation, fewer funds for research and rehabilitation, and dual stigmatization.[4] With the identification of the value of systemic corticosteroids in the management of complications associated with COVID-19, it has been felt that all forms of oral corticosteroids are no more freely available to leprosy patients including those suffering from lepra reactions. It is obvious considering the above-mentioned constraints that we look beyond the traditional service delivery, to methods such as e-learning, telemedicine, mobile health, and other innovative approaches, to maintain the continuity of services, countering stigma, and ensuring the respect of human rights of people affected by leprosy. Another way is to train and empower healthcare workers using a simple algorithmic approach to reach out in the community and segregate patients requiring urgent referral to higher centers while continuing provision of multidrug therapy (MDT) directly to the patients to prevent defaulting ([Figure 1] proposed algorithm for healthcare workers). (Level of Evidence VII)
Figure 1: Algorithm for healthcare workers

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It is a quirk of fate that the Spanish flu of 1918–1919 and the COVID-19 pandemic are separated almost exactly a century apart, but both teach us the same with regard to the importance of public health. We have progressed on various fronts in the interim like a better understanding of diseases, the development of new treatments, the discovery of vaccines, and easier dissemination of scientific information by social media, and yet the inequalities in the society dilute much of these modern achievements.[5]

Is there a new risk group?

SARS-CoV-2 infects all ages, while high-risk groups were already identified mutants of the virus presumably resulted in increased infectivity with more cases in young adults and children.[6],[7]

It is well established that India has the highest burden of leprosy in the world and has reported 1, 14, 451 new leprosy cases in 2019 including 9,227 new pediatric cases in 2018.[8] With COVID-19 increasingly affecting the younger population, its complex interplay with leprosy is likely to play out more during this surge and further.

Leprosy and COVID-19, a mercurial relationship

Expert opinions and some guidelines are suggesting that COVID-19 can influence the incidence and severity of lepra reactions. We must remain mindful that the concurrent stress of the pandemic may also play an important role in triggering or maintenance of reactions. To date, the data suggesting any change in rates of incidence, severity, or recurrence of reactions in leprosy are limited.[9]

Santos et al. (2021)[10] published a surveillance study of hospitalized cases of leprosy with COVID-19 coinfection from 17 March to 30 June 2020 at Aracaju in Brazil. Out of a total of 378 leprosy cases under treatment, only four (1%) were diagnosed with COVID-19 and hospitalized. All the four had the lepromatous disease and ominously all expired. Authors themselves point out that three of them had other comorbidities. In the recently held Biennial conference of Indian Association of Leprologists (IAL), Pai et al[11] presented a series of seven cases with leprosy and COVID-19 coinfection from Mumbai and they observed that despite the presence of comorbidities like diabetes, hypertension, asthma, and tuberculosis in four patients and use of prednisolone for reaction all the patients recovered and none of them developed severe disease. Therefore, the data outlining the impact of COVID-19 on leprosy are still conflicting.

Understanding about markers of prognosis

During the past year of the pandemic, our understanding of predictors of unfavorable outcomes in COVID-19 has improved. The most significant ones include advanced age, raised levels of AST, creatinine, BUN, bilirubin, and neutrophils. Likewise, a reduction in eosinophils, monocytes, basophils, and lymphocytes in peripheral blood smear also help predict the condition of a severely ill patient. Most of these investigations are routine and largely affordable.[12] However, in a study of nine patients with lepromatous leprosy with COVID-19 infection from Turkey, it was observed that all the patients recovered and were discharged despite having poor prognostic markers like low calcium levels, elevated procalcitonin, and interleukins-6 (IL-6) values, which are accepted as criteria of poor prognosis.[13] According to one hypothesis, the severity of the host response in infection with SARS-CoV-2 may be due to aberrant activation of neutrophils in peripheral blood. COVID-19 patients' blood cell counts show a progressive rise in white blood cells, neutrophil percentage, absolute neutrophil count, and neutrophil-to-lymphocyte ratio (NLR). Like COVID-19, cytokine storm and high levels of inflammatory serum mediators including c-reactive protein, neutrophilia, and high NLR have been described in patients with type 2 lepra reaction.[14] A recent case report on concomitant COVID-19 with type 2 lepra reaction has raised the possibility that elevated interferon-γ (INF-γ) levels in the reaction may have a favorable effect on COVID-19 co-infection.[15] That case was successfully managed by utilizing daily prednisolone and methotrexate.

Summary of recent advances and new recommendations

Salient changes in the recommendations between version 1[1] and the current version with level of evidence are summarized in [Table 1].
Table 1: Salient changes in the recommendations by IADVL SIG Leprosy & IADVL academy between First recommendation[1] & the updated version

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Re-purposing of drugs traditionally used for management of leprosy to be used in COVID-19

The search for drugs useful in COVID-19, has brought the spotlight on a few which are utilized in the management of leprosy.

Anti-leprosy drugs


Clofazimine exhibited antiviral activity in Vero E6 cells infected by SARS-CoV-2 in vitro, thereby prompting a clinical trial of the drug combined with IFN β-1b. Further, it was demonstrated that administration of clofazimine reduced viral load in the lungs and also fecal viral shedding.[16] Being a cheap drug, it may serve as an additional tool against the variants of coronavirus too, on which the vaccines are less effective. The downside is the unreliable supply of clofazimine in the open market, although it is available in the World Health Organization (WHO) MDT packs in government supply. Considering the dual advantage that it offers, regular availability of clofazimine in the open market should be ensured. (Level of Evidence VII)

Drugs given in reactions

Caution using steroids

Patients with lepra reactions are often on systemic corticosteroids. These are essential drugs especially in managing neuritis where delay in their use can lead to permanent disability. There is an obvious apprehension that the usage of corticosteroids may immunosuppress the patient and thereby lead to a poor outcome in the event of co-infection with COVID-19. There is a trend noted for an increased risk of poor outcome in COVID-19 hospitalized patients in case of previous exposure to corticosteroid before hospital admission. However, in a recently published study, the authors conceded that after adjustment for potential confounders, they found no evidence for increased risk in patients who were on steroids before the infection.[17] The reports are stating that COVID-19 is a biphasic illness with an initial viremia and steroid usage at the time of viraemia may suppress protective innate response as well as result in delayed recovery.[18] Yet, the available data on this aspect of steroids in COVID-19 are equivocal. The preliminary results of the RECOVERY trial support use of dexamethasone for up to 10 days in patients who were receiving invasive mechanical ventilation, but report no benefit and possible harm in the subgroup of hospitalized patients who were not on respiratory support.[19] The studies in this regard to leprosy patients are lacking except for a few case reports and series, where patients were on prednisolone for management of reactions and no adverse outcomes were observed.[11],[15]

There is a recent and important caveat though, prolonged steroid use or abuse may predispose the patients to the development of rhinocerebral and pulmonary mucormycosis. In a nutshell, each case needs to be considered on its merit, steroids should not be used indiscriminately and one should not refrain from utilizing systemic steroids on recommended indications. (Level of Evidence II)

Methotrexate and other immunomodulators

High-dose of methotrexate with leucovorin rescue has been postulated as an immune stabilization strategy for SARS-CoV-2 induced “PANIC” attack for severe COVID-19.[20] Recent work by Gisondi et al.[21] suggests that outcomes of patients receiving systemic immunomodulatory therapies in COVID-19 patients are similar to those of the general population. These findings may relate to the aberrant cytokine and inflammatory responses in severe COVID-19, which may be treated or partially blunted by cytokine-targeted therapy.[22] Holcomb et al.[23] have reported that the risk of both COVID-19 and poor outcomes is minimally affected by dermatologic immunomodulatory medications. Based on this evidence, we suggest that systemic immunomodulators can be used judiciously for the control of severe leprosy reactions. (Level of Evidence V)


An age-old drug colchicine is also utilized in type 2 lepra reactions.[24],[25] There are suggestions about its favorable role in COVID-19 and especially in a resource-poor setting like ours. Colchicine was suggested to be useful for the treatment of some complications of COVID-19 infection, based on its action on IL-6 and inflammasomes, which may help in ameliorating the cytokine storm.[26],[27]

Colchicine can be tried in the condition of coexistence of COVID-19 and type 2 lepra reaction.[28] The dose of colchicine is 0.5 to 2 mg/day in two to three divided doses. Monitoring for the adverse effects by regular complete blood counts, liver and renal function tests. The total daily dose should be ≤4 mg and in renal patients ≤2 mg.[29]


Vaccines against SARS-CoV-2 are still our best bet against the current pandemic. With patients of lepra reactions on steroids or immunosuppressants, doubts abound regarding the safety and reliable immunogenicity. The thumb rule should be that COVID vaccination should not be delayed and although such recommendations are somewhat general in nature but can be extrapolated to leprosy.[30] (Level of Evidence VII).

The vaccines are expected to be safe for patients on drugs affecting immunity with some diminution in efficacy. Such a diminution too is dependent on the dose of immunosuppressives, their mechanism of action, and the type of vaccine administered.[31]

Theoretically, BCG vaccine can confer protection in SARS-CoV-2 via two mechanisms: (i) induction of controlled pro-inflammatory pathways (“trained immunity” and early activation of CD4 + T-cells) and (ii) during hyperinflammatory conditions, BCG can also trigger anti-inflammatory or tolerogenic pathways to douse the excess inflammation.[32]

Mycobacterium indicus pranii (MIP) vaccine is a potent toll-like receptor 2 (TLR2) agonist and a poly TLR antagonist. In a retrospective observational study, 117 (84 males and 33 females) COVID-19 patients, the use of this vaccine was seen to be associated with rapid recovery in 116/117 patients from COVID-19 who were discharged from the hospital within 10 days.[33]

In a separate trial (ARMY-1), the use of the MIP vaccine as an immunomodulator in addition to standard care resulted in early clinical improvement compared to standard care alone.[34] Larger randomized controlled trials are recommended to assess the role of the MIP in COVID-19.

The spectre of mucormycosis

Recent findings of increased cases of mucormycosis in SARS-CoV-2 and its relation with the use of immunosuppressives/corticosteroids raise the concern about the development of mucormycosis in leprosy. Neutrophil dysfunction, high and prolonged use of oral steroids and thalidomide in lepra reaction can increase the incidence of mucormycosis in leprosy. Basílio et al.[35] reported a case of cutaneous mucormycosis in an immunosuppressed patient with multibacillary leprosy, under prolonged corticosteroid and thalidomide therapy to control leprosy type 2 reaction. The judicious use of corticosteroids and immunosuppressives in leprosy is recommended. (Level of Evidence VII)

Additionally, the dermatologist needs to be aware of the dermatological manifestations of mucormycosis. These can be described as primary, secondary, and contiguous. Primary mucormycosis is further classified into acute necrotizing type and chronic granulomatous type. The acute necrotizing type has reddish-purple indurated plaques progressing to necrosis and eschar formation, while the chronic granulomatous type is identified by an erythematous plaque with a progressive margin and areas of healing and scar formation. While the management of acute necrotizing mucormycosis requires control of the predisposing condition, surgical debridement, and liposomal amphotericin B, the chronic type can be managed by liposomal amphotericin B.

The secondary cutaneous mucormycosis is also the most common and is seen in hospital and emergency settings. The cutaneous involvement is due to dissemination from an internal source. The cutaneous features are similar to that of the acute necrotizing type of primary mucormycosis. The contiguous type arises due to spread from underlying structures like sinuses. This type presents with oral ulcers, mucosal eschars, periorbital edema, periorbital cellulitis, ophthalmoplegia, loss of vision, and neurological deficits. Cutaneous features generally appear subsequent to sinus/nose involvement in the form of pain/loss of sensation over face, facial puffiness or necrosis of the skin over the cheek, eye, or lateral nasal wall area.[36]

The leprosy workers should educate the patient about these early signs of mucormycosis and advised them for immediate consultation with an expert if such a situation arises [Table 2].
Table 2: Early Signs/Symptoms of Mucormycosis

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Thromboembolic events

COVID-19 may predispose patients to thrombotic disease, both in the venous and arterial circulations, because of excessive inflammation, platelet activation, endothelial dysfunction, and stasis.[37] It is biochemically characterized by the elevated D-dimer without remarkable changes of other global coagulation markers and is associated with various thrombotic complications and disease severity.[38] In leprosy, Mycobacterium leprae directly/indirectly affects the cutaneous vessels and sometimes mimics vasculitis. The concomitant use of thalidomide and oral corticosteroids in erythema nodosum leprosum (ENL) increases the risk of coagulopathy. It has been red-flagged and due vigilance is advised, although lack of robust evidence has also been acknowledged.[39],[40] With COVID-19 infection, another pro- coagulatory variable gets added to the mix. It must be noted, that in the absence of routine assessment for ruling out thrombophilia, introducing aspirin (100 mg/day) was part of an existing recommendation for treating ENL.[41] So IADVL SIG leprosy recommends the addition of low-dose aspirin and timely initiation of antithrombotic therapy in COVID-19 positive leprosy cases considering the risk factors like steroid or thalidomide use, obesity, diabetes, and in nonambulatory patients. (Level of Evidence VII)

Status of reconstructive surgeries

Many major reconstructive surgeries have been performed during the COVID-19 pandemic all over the world including India. There are also published reports in which researchers found that patient safety and postoperative outcomes have been demonstrated to be equivalent to the pre-COVID era.[42] The major concern during the surgery is following strict COVID-19 protocol, avoidance of aerosol generation, and care of healthcare professionals to avoid COVID-19 infection. (Level of Evidence VII)

Leprosy post-exposure prophylaxis (LPEP)

LPEP with single-dose rifampicin (SDR) program helps in the feasibility of combining three key interventions: systematically tracing contacts of individuals newly diagnosed with leprosy, screening the traced contacts for leprosy, and administering SDR to eligible contacts. (Level of Evidence VII)

Though during the phase of lockdown, this program is operationally difficult but with proper training of healthcare workers on telemedicine [Figure 1], this can be implemented.

Mental health

Leprosy is a neglected tropical disease often associated with disability, stigma, and discrimination. This results in poor mental health, stress, and depression. The virus, SARS-CoV-2, is also associated with neuropsychiatric disorder, anxiety, fear, stress, and depression.[43],[44],[45]

It is recommended that mental issues among leprosy patients be directly enquired about, relaxation techniques communicated either by dermatologists themselves or by utilizing the services of trained counselors. (Level of Evidence VII)

   Conclusion Top

A continued reassessment of existing practices and drug recommendations is required due to evolving and rapidly changing nature of the COVID 19 pandemic. A sustained and coordinated effort from the government, doctors, healthcare workers, NGOs, and self-help groups involved in leprosy care is needed to absorb the shock of the COVID-19 pandemic on marginalized patients of leprosy.

Financial support and sponsorship


Conflicts of interest

There are no conflicts of interest.

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  [Figure 1]

  [Table 1], [Table 2]


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