On 2017 Apr 05, Gwinyai Masukume commented:

The authors state that South Africa is the “country with the highest global incidence of HIV/AIDS.”

This is an oversight because both Swaziland and Lesotho have an estimated HIV incidence rate among adults (15-49) greater than South Africa’s. The incidence rates as of 2015, the most recent available from http://aidsinfo.unaids.org/, are 1.44 for South Africa, 1.88 for Lesotho and 2.36 for Swaziland.

This translates into approximately 380 000 new HIV infections per year for South Africa, 18 000 for Lesotho and 11 000 for Swaziland. South Africa has a much larger population, about 55 million people compared to Lesotho’s of about 2 million and to Swaziland’s of about 1.5 million https://www.cia.gov/library/publications/the-world-factbook/rankorder/2119rank.html#sf.

Although the absolute numbers of new HIV infections is higher for South Africa, both Lesotho and Swaziland, for their population sizes, have disproportionately more new HIV infections (incidence) than South Africa.

On 2017 Apr 05, Gwinyai Masukume commented:

The authors state that South Africa is the “country with the highest global incidence of HIV/AIDS.”

This is an oversight because both Swaziland and Lesotho have an estimated HIV incidence rate among adults (15-49) greater than South Africa’s. The incidence rates as of 2015, the most recent available from http://aidsinfo.unaids.org/, are 1.44 for South Africa, 1.88 for Lesotho and 2.36 for Swaziland.

This translates into approximately 380 000 new HIV infections per year for South Africa, 18 000 for Lesotho and 11 000 for Swaziland. South Africa has a much larger population, about 55 million people compared to Lesotho’s of about 2 million and to Swaziland’s of about 1.5 million https://www.cia.gov/library/publications/the-world-factbook/rankorder/2119rank.html#sf.

Although the absolute numbers of new HIV infections is higher for South Africa, both Lesotho and Swaziland, for their population sizes, have disproportionately more new HIV infections (incidence) than South Africa.