Though we have not been personally affected by the floods (didn't know any of the victims etc.) other than of course our heartfelt sympathies to those who lost loved ones, there are a few related items-about-town to mention.
There are donation bins and collections points set up virtually everywhere. They are asking for donations such as water and food, clothing, toiletries, candles - basically anything useful is welcome. Transportation of these items is reportedly a bit of a nightmare though and so therefore although Cariocas (along with the rest of the country) being known for their generousity of course, have opened their hearts and wallets, apparently not many of these goods have yet reached those in need.
There is/was a great need for blood donations. However, I have been unable to locate anywhere other than the blood bank in centro to make said donations. If anyone knows of other places to donate blood, please advise. That would be good info to have in any case.
At the grocery stores, the produce shelves are pretty barren in the legumes section. Many of our fruits and veg come from affected areas.