The global landscape of health care is changing with health systems operating in increasingly complex environments. While new treatments, technologies and care models can have therapeutic potential, they can also pose new threats to safe care. Patient safety is a fundamental principle of health care and is now being recognized as a large and growing global public health challenge. Global efforts to reduce the burden of patient harm have not achieved substantial change over the past 15 years, despite pioneering work in some health care settings.

Onchocerciasis is an eye and skin disease. Symptoms are caused by the microfilariae, which move around the human body in the subcutaneous tissue and induce intense inflammatory responses when they die. Infected people may show symptoms such as severe itching and various skin changes. Some infected people develop eye lesions which can lead to visual impairment and permanent blindness. In most cases, nodules under the skin form around the adult worms.

Onchocerciasis – or “river blindness” – is a parasitic disease caused by the filarial worm Onchocerca volvulus transmitted by repeated bites of infected blackflies (Simulium spp.). These blackflies breed along fast-flowing rivers and streams, close to remote villages located near fertile land where people rely on agriculture.

The main functions of WHO (occupational health) mandated in article 2 of its Constitution include promoting the improvement of working conditions and other aspects of environmental hygiene.
 
Recognizing that occupational health is closely linked to public health and health systems development, WHO is addressing all determinants of workers' health, including risks for disease and injury in the occupational environment, social and individual factors, and access to health services.
 

Tropical cyclones, also known as typhoons or hurricanes, are among the most destructive weather phenomena. They are intense circular storms that originate over warm tropical oceans, and have maximum sustained wind speeds exceeding 119 kilometres per hour and heavy rains.

However, the greatest damage to life and property is not from the wind, but from secondary events such as storm surges, flooding, landslides and tornadoes.

Tropical cyclones are referred to by different names depending on where they originate in the world.

Tsunamis are giant waves that are produced when a large volume of water is displaced in an ocean or large lake by an earthquake, volcanic eruption, underwater landslide or meteorite. Between 1998-2017, tsunamis caused more than 250 000 deaths globally, including more than 227 000 deaths due to the Indian Ocean tsunami in 2004.  

Infection is associated with inflammatory changes in the conjunctiva known as “active trachoma”. An individual’s immune system can clear a single episode of infection, but in endemic communities, re-acquisition of the organism occurs frequently.

Trachoma is a disease of the eye and the leading infectious cause of blindness worldwide. It is caused by an obligate intracellular bacterium called Chlamydia trachomatis. Infection is transmitted from person to person by direct or indirect transfer of ocular and nasal discharges of infected people; indirect transfer includes carriage on the body of species of flies. Preschool-age children harbour the principal reservoir of infection. Models suggest that an individual requires more than 150 lifetime infections to develop the blinding complications of trachoma.

The scale of this human and economic tragedy is shocking, but it’s also preventable. Big Tobacco — along with all manufacturers of tobacco products — is fighting to ensure the dangers of their products are concealed, but we are fighting back: In 2003, WHO Member States unanimously adopted the WHO Framework Convention on Tobacco Control (WHO FCTC), the only public health treaty under the auspices of WHO. In force since 2005, it has currently 181 Parties.

An estimated 1.3 billion people worldwide use tobacco products, 80% of whom are in low- and middle-income countries. Tobacco use contributes to poverty by diverting household spending from basic needs, such as food and shelter, to tobacco. This spending behaviour is difficult to curb because tobacco is so addictive. It also causes premature death and disability of productive age adults in households thus leading to reduced household income and increased healthcare costs.

Nicotine contained in tobacco is highly addictive and tobacco use is a major risk factor for cardiovascular and respiratory diseases, over 20 different types or subtypes of cancer, and many other debilitating health conditions. Every year, more than 8 million people die from tobacco use. Most tobacco-related deaths occur in low- and middle-income countries, which are often targets of intensive tobacco industry interference and marketing.

he treatment of taeniasis by Taenia solium is important to prevent neurocysticercosis and as a tool to assist in controlling or stopping the parasite transmission cycle. The treatment can be done on an individual bases, or as Mass Drug Administration depending on the local circumstances and the control approaches being implemented. Taeniasis can be treated using anthelmintics (Praziquantel, Niclosamide, Albendazole).

Taeniasis is usually characterized by mild and non-specific symptoms associated to an intestinal infection (abdominal pain, nausea, diarrhoea, etc.). These symptoms may continue until the tapeworm dies following treatment, otherwise it may live for years.

For cysticercosis, the incubation period is variable, and infected people may remain asymptomatic for years. In some endemic regions, infected people may develop visible or palpable nodules (a small solid bump or node which is solid that can be detected by touch) beneath the skin.

Infection with the tapeworm Taenia solium can result in two distinct conditions: taeniasis and cysticercosis. Taeniasis is the intestinal infection with the tapeworm and it occurs when a person eats raw or undercooked, infected pork. Taeniasis has no major impact on human health. However, tapeworm eggs pass in the faeces of the tapeworm carrier and in the absence of a proper sanitation may contaminate the environment. While tapeworm eggs are infective for pigs, T.

WHO’s work is guided by the Sustainable Development Goals, particularly Goal 3: “Ensure healthy lives and promote well-being for all at all ages.” The Goals inform projects and policies across the Organization, including guidelines on housing, urban development, transportation systems and health care delivery.