At least 19 people have died and some 500 families were left homeless across the state in the rains between Friday and Sunday, Sao Paulo state authorities say.
President Jair Bolsonaro has persistently defied expert advice on containing the pandemic and recently declared he did not plan to be vaccinated.
Technology Minister Mustafa Varank expresses satisfaction over the use of Turkey-made ventilators in Brazil, the second most-affected country by coronavirus.
Violent storms in recent days have dumped a month's worth of rain on some areas in a matter of hours, devastating the southern coast of Sao Paulo state and poor neighbourhoods on the outskirts of Rio de Janeiro.
Two assailants open fire inside a school near Sao Paulo, killing eight people before turning their weapons on themselves, authorities say.
The building, a former federal police headquarters, was engulfed in a blaze before the floors started falling on themselves like dominoes with debris flying in all directions.
Former president Lula de Silva was leading in early polling in the Brazilian election, but is most likely going to be watching the campaign through prison bars.
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