A malaria epidemic of more than three million cases in 2015, and another four million cases in 2016 has also strained the health system.
As of February 12, Brazil has confirmed 230 cases of yellow fever, including 79 confirmed deaths.
In addition to the 70 confirmed deaths, another 93 deaths are awaiting testing confirmation.
Over the past year, yellow fever and malaria outbreaks in Angola have claimed more than 15,000 lives.
1,006 suspected cases of yellow fever have been reported to the Ministry of Health, and of those cases, 751 cases are under investigation while 180 cases have been confirmed.
In January, Brazil had 712 suspected cases yellow fever, a fivefold increase.
Confirmed yellow fever cases in the Brazil outbreak has increased to 149, including 52 deaths.
Brazil has not seen this large an outbreak since 2000.
The yellow fever outbreak has killed an estimated 105 people, of which 40 deaths have been confirmed.
Brazil's health ministry has ordered 11.5 million doses of vaccine as the nation grapples with a yellow fever outbreak that has killed at least 40 people in the past two months.