Diseases, Conditions, Syndromes

Covid pandemic 'nowhere near over': WHO

The COVID-19 pandemic is far from over, the World Health Organization chief said Tuesday, cautioning against a narrative that the fast-spreading Omicron variant is risk-free.

Diseases, Conditions, Syndromes

Experts answer questions about the COVID-19 omicron variant

As the holidays approach, new information continues to surface about the omicron variant of COVID-19. We've asked our experts to weigh in on the most common questions we receive about omicron prevalence, transmission and ...

Diseases, Conditions, Syndromes

COVID-19 Omicron wave in South Africa characterized

(HealthDay)—In South Africa, the pattern of patients hospitalized with COVID-19 early in the fourth wave showed fewer hospitalizations and reduced severity of illness compared with earlier waves, according to a research ...

Diseases, Conditions, Syndromes

World breaks daily COVID case record

The world registered a record-high average of more than three million coronavirus cases a day between January 13 and 19, fuelled by the Omicron variant, an AFP tally showed Thursday.

Diseases, Conditions, Syndromes

Omicron: What the next few weeks will look like

Omicron, the latest variant of concern, was discovered in samples collected on November 8 in South Africa. It rapidly replaced delta as the dominant variant in the country and now accounts for nearly 100% of cases in South ...

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Africa is the world's second-largest and second most-populous continent, after Asia. At about 30.2 million km² (11.7 million sq mi) including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area. With a billion people (as of 2009, see table) in 61 territories, it accounts for about 14.8% of the World's human population. The continent is surrounded by the Mediterranean Sea to the north, the Suez Canal and the Red Sea to the northeast, the Indian Ocean to the southeast, and the Atlantic Ocean to the west. Not counting the disputed territory of Western Sahara, there are 53 countries, including Madagascar and various island groups, associated with the continent.

Africa, particularly central eastern Africa, is widely regarded within the scientific community to be the origin of humans and the Hominidae tree (great apes), as evidenced by the discovery of the earliest hominids and their ancestors, as well as later ones that have been dated to around seven million years ago – including Sahelanthropus tchadensis, Australopithecus africanus, A. afarensis, Homo erectus, H. habilis and H. ergaster – with the earliest Homo sapiens (human) found in Ethiopia being dated to ca. 200,000 years ago.

Africa straddles the equator and encompasses numerous climate areas; it is the only continent to stretch from the northern temperate to southern temperate zones.

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