HIV-positive 71-year-old Sylverio Hachiploa reads in his thatched hut during a visit by a home-based care team in the village of Nedwmba, south of the Chikuni Mission in the south of Zambia February 23, 2015. The caregivers in the Jesuit-run home-based care project at the Chikuni Mission run a capacity-building and empowerment project at the household level, offering training and assistance in crop-growing and animal rearing, as well as offering companionship, pastoral care and monitoring of the antiretroviral treatment compliance of HIV-AIDS patients. (Photo by Darrin Zammit Lupi/Reuters)

11-year-old Sonia Matanga, who was born HIV-positive, attends a self-help group meeting with a caregiver in the village of Michelo, south of the Chikuni Mission, in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

11-year-old Sonia Matanga (L), who was born HIV-positive, attends a self-help group meeting with caregiver Davison Mungoni (R) in the village of Michelo, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

11-year-old Sonia Matanga (L), who was born HIV-positive, attends a self-help group meeting with caregiver Davison Mungoni (R) in the village of Michelo, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

HIV-positive members of a self-help group pray at the start of a meeting in the village of Michelo, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

HIV-positive members of a self-help group meet with a caregiver in the village of Michelo, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

11-year-old Emery Phiri (right), who was born HIV-positive, and her grandmother attend a self-help group meeting with a caregiver in the village of Michelo, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

HIV-positive 71-year-old Sylverio Hachiploa reads in his thatched hut during a visit by a home-based care team in the village of Nedwmba, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

HIV-positive 71-year-old Sylverio Hachiploa (R) talks with caregivers Glandwel Muleya (L) and Sister Abigail Mwaka Mazuba (C) in his thatched hut during a visit by a home-based care team in the village of Nedwmba, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

HIV-positive 71-year-old Sylverio Hachiploa sits cross-legged during a visit by a home-based care team in the village of Nedwmba, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

11-year-old Emery Phiri, who was born HIV-positive, attends a self-help group meeting with a caregiver in the village of Michelo, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

HIV-positive members of a self-help group meet with a caregiver in the village of Michelo, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

HIV-positive members of a self-help group leave after a meeting with a caregiver in the village of Michelo, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

HIV-positive 71-year-old Sylverio Hachiploa reads in his thatched hut during a visit by a home-based care team in the village of Nedwmba, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

HIV-positive 71-year-old Sylverio Hachiploa (right) walks with caregivers Glandwel Muleya (L) and Sister Abigail Mwaka Mazuba (C) during a visit by a home-based care team in the village of Nedwmba, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

A child looks out from behind a curtain during a visit by a home-based care team to an HIV-positive person in the village of Choongo, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)

Caregiver Sister Abigail Mwaka Mazuba walks back to her vehicle after visiting an HIV-positive person in the village of Nedwmba, south of the Chikuni Mission in the south of Zambia February 23, 2015. (Photo by Darrin Zammit Lupi/Reuters)