20 deaths in March/2021 to 6 in April/2021. When you go to see the stats since April/2020, you'll notice that there were full months with 0 or 1 death. [0]
Too soon, too small sample to draw such conclusions.
The end of winter probably has a lot to do with it also (just like flu deaths go down during the spring and summer). The vaccines effectiveness probably won’t show through very visibly until November.
Seasonality isn't really understood at all by epidemiologists, so it's probably best to confine discussion of it to the places where it's clearly visible, which is mostly the northern hemisphere indeed.
20 deaths in March/2021 to 6 in April/2021. When you go to see the stats since April/2020, you'll notice that there were full months with 0 or 1 death. [0]
Too soon, too small sample to draw such conclusions.
[0] For ex., search for "Serrana" in this site: https://especiais.gazetadopovo.com.br/coronavirus/casos-no-b...
edit: typo, should be "april/2020"