we join them in one of the outer suburbs of recife. the brazilian government has deployed some 220,000 soldiers nationwide, working alongside public health officials. more than 10 million homes have been inspected so far. the zika virus is transmitted by the yellow fever mosquito which looks for pools of water to lay its eggs. secretary correia: the effectiveness of these measures is limited. we need to reduce the mosquito population more than ever before and we need to be open to new technology in this area and new strategies for the fighting the mosquitoes. scientists and public health officials need to work together to produce more effective results and improve protection for the people. reporter: during our search for mosquito breeding grounds, we begin to encounter some of the deep-rooted problems in brazilian society. many of the favelas have no garbage collection. waste simply lands on the streets. brazil's major cities have grown so rapidly that infrastructure has just not kept pace. in recife alone, more than half the homes ar

miles o'brien, pbs newshour, recife, brazil. >> woodruff: stay with us. coming up on the newshour": making sense of sexism on wall street, "on my own" public radio host diane rehm's memoir of love and loss, and a soft-spoken musician unleashes her inner beast. but first, a new study provides a disturbing look into the ways isis uses children to fight its battles. hari sreenivasan has our conversation. >> sreenivasan: a new report chronicles the increasing use of children as fighters for the so-called islamic state. the author is based in fort of georgia documented propaganda which praises deceased young fighters as martyrs and shows how the group uses children and youth in suicide operations and found three times as many suicide attacks involving young people in january of this year than last year. for more on the study's findings and what they mean we're joined by one of the report's awe authorize professor mia bloom. unfortunately, child soldiers aren't anything new. how is i.s.i.s. using them differently? >> we started our study with a baseline looking

. >> en recife brasil en otro encuentro por las eliminatorias se dejaba luisito suárez uruguay.final. los chapines le faltaban dos minutos. el eterno delantero carlos el pescadito ruíz ganó dos a cero guatemala. y aleja a estados unidos del mundial de rusia. en la nba los guardias ante los mavericks resumiendo el anillo de campeón. anotarán 21 tiros. los warriors vuelven a ganar. mantiene su racha invicta en casa. maría leticia: gracias raúl, enseguida el candidato republicano ted cruz culpa a su rival donald trump de un artículo que afirma que cruise ha tenido varias amantes. además se encuentre primer caso de virus del zika por contacto sexual. la mujer contagiada no viajó al exterior del país. estamos transmitiendo en vivo desde san francisco en el que el desde san francisco en el que el termómetro marca 50 °f.. maría leticia: esta persona no tiene lugar en la política, esas son las palabras del aspirante republicano a la casa blanca ted cruz en respuesta a un artículo que publicó el tabloide de nacional encuire en el que asegura que cruise tuvo muchas amantes. esta semana tr