The last Sunday of January is World Leprosy Day. Since 2006, I have issued an annual Global Appeal to End Stigma and Discrimination against Persons Affected by Leprosy, supported by influential individuals and organisations around the world.

Amid the coronavirus pandemic, which has shown how easily fear and anxiety about a disease can fuel prejudice, I believe this call to eliminate stigma and discrimination is more important than ever.

Leprosy, also known as Hansen's disease, is a chronic infectious disease caused by the bacillus Mycobacterium leprae. It mainly affects the skin and peripheral nerves and is said to be one of the oldest diseases in human history.

Each year, around 200,000 new cases are reported globally.

In Nepal, 2,304 new cases were reported in 2020, and it is one of 23 countries on the WHO's priority list for leprosy. Most cases are found in the Tarai region bordering India.

Today an effective treatment exists in the form of multidrug therapy (MDT), and with early detection and treatment, the disease can be cured without complications.

But if treatment is delayed, leprosy can cause progressive impairment and lead to permanent disability.

There are an estimated 3 to 4 million people living with some form of disability due to leprosy. This fact, together with deep-seated fears and misperceptions about this age-old disease, has subjected persons affected by leprosy and even their family members to severe discrimination, which continues to this day.

Since becoming WHO Goodwill Ambassador for Leprosy Elimination in 2001, I have visited some 120 countries to see the situation for myself. This has led me to think of leprosy in terms of a motorcycle: the front wheel symbolises curing the disease, and the back wheel represents eliminating discrimination.

Unless both wheels are turning together, we will not reach our ultimate goal of zero leprosy.

As regards the front wheel, efforts against the disease, including new case detection, have been badly disrupted by the spread of the novel coronavirus and efforts to prevent transmission.

In 2020, the number of new cases reported was down some 37 per cent year on year, according to the WHO, largely due to the impact of COVID-19.

Concerning the rear wheel, I have worked hard to have leprosy recognised internationally as a human rights issue since the early 2000s, when I first approached the Office of the UN High Commissioner for Human Rights.

One result has been the adoption in 2010 of a UN General Assembly on elimination of discrimination against persons affected by leprosy and their family members.

But the real measure of success will be when principles and guidelines accompanying the resolution are fully implemented. Because of the pandemic, however, awareness-raising efforts in many areas have stalled, and some people have found that COVID-19 is exacerbating the discrimination they already experience as persons affected by leprosy.

This is why last August I launched a campaign called 'Don't forget leprosy' to ensure that leprosy and the needs of those affected by the disease are not overlooked, even amid the pandemic. The campaign stresses the importance of early detection and treatment, as well as the need to eliminate stigma and discrimination.

The term 'don't forget' covers many things: that leprosy still exists; that people affected by leprosy and their families still face social prejudice; and that there are healthcare professionals doing their best in difficult circumstances to provide needed services.

In Nepal, a country I have visited many times over the years, what has impressed me has been the strong cooperation I have found between the Ministry of Health and Population and leprosy NGOs.

They make the most of their respective strengths and complement each other's efforts, and in this way have helped to advance measures against leprosy throughout the country.

Working in partnership with the ministry's leprosy control programme, Anandaban Hospital near Kathmandu, Lalgadh Leprosy Hospital and Services Centre in Janakpur and the Green Pastures Hospital in Pokhara provide both medical and social support.

They provide treatment and rehabilitation, and assist with reintegration into the community.

I should also like to give a mention to the leprosy centre established in Surkhet with the support of Sasakawa Health Foundation, operated with the dedicated efforts of the local people and contributing to community medical care.

Over the past 50 years we have come a long way towards our goal of a world free from leprosy and the discrimination it causes.

We must not allow the progress we have made to be undone by the impact of the COVID-19 pandemic.

That is why I started the 'Don't forget leprosy' campaign.

Together with my annual Global Appeal and the activities that partner organisations will be carrying out for World Leprosy Day this year, I hope it will put the disease back in the spotlight and show that our work to end the medical and social problems related to leprosy is not yet done. Please add your voice to the campaign and make this a collective effort. Together we can be heard loud and clear: 'Don't forget leprosy'.

Sasakawa is WHO Goodwill Ambassador for Leprosy Elimination, Japanese Government Goodwill Ambassador for the Human Rights of Persons Affected by Leprosy and Chairman, The Nippon Foundation

A version of this article appears in the print on January 28, 2022, of The Himalayan Times.