I think that these virus cases will decrease completely towards the entrance of summer because summer months are very important periods for many countries.
This virus is proven still dangerous even in the desert area, such as Arab, Iran, etc., so summer instead of killing the virus, it will rapidly spread if people go outside and do stupid stuff (party, sunbathing, etc.).
I predicted it would be end on Q3.. By now the US medical experts were tryin to invent the vaccine and I there is no impossible from their intelligence I believe on their ability to find the cure on this virus. Even with or without the vaccine most of the infected patience got recovered without any vaccine. So I believe this pandemic will gone soon.
The US and Europe are making this virus happy by their arrogance. Instead of doing strict self-distancing, telling people to wear a mask, don't do handshake, etc., they more concerned about their "freedom."
If they don't humble themselves, we won't win this war anytime soon.