In Japan, two more people were confirmed to be infected with the new coronavirus today. In Japan, two more people were confirmed to be infected with the new coronavirus today.

Your sentence is correct, but I think a 'to be' there flows a bit better.

In Japan, two more people were confirmed [to be] infected with the new coronavirus today. In Japan, two more people were confirmed [to be] infected with the coronavirus today.

In Japan, two more people were confirmed to be infected with the new coronavirus today. In Japan, two more people were confirmed to be infected with the coronavirus today.

This makes a total of six people. [in Japan who are infected with the virus] This makes a total of six people [in Japan who are infected with the virus]

How you wrote it made seem like the whole world only has 6 people with the virus. I also made your description more detailed.

One of those peoplem has never been to Wuhan, according to the article. One of those people has never been to Wuhan, according to the article.

He is a bus driver who drove for tourists who came from Wuhan. He is a bus driver who drove tourists who came from Wuhan.

Just to confirm, the bus driver himself never went to Wuhan but some of the passengers on his bus came from Wuhan? 彼は武漢から来た観光客を運転したバスの運転手です。 I'm not an editor or grammar expert but I feel having two "who" in a single noun phrase sounds a little awkward. I think "He is a bus driver who drove tourists coming from Wuhan" sounds a bit better.

I will wear a mask outside the house from[starting] tomorrow. I will wear a mask outside the house [starting] tomorrow.

From tomorrowは正しいですが starting tomorrowの方が自然に聞こえます

I will wear a mask outside the house from tomorrow. I will wear a mask outside the house from tomorrow.

Your sentence is perfect, I just want to suggest an alternative: "I have decided it's best to wear a mask outside the house from tomorrow."

I will'm going to wear a mask outside the house fromstarting tomorrow. I'm going to wear a mask outside the house starting tomorrow.

"I'm going to (do smth)" is good for stating intentions. Though, it's really an alternative word choice.

I hope the situation getsis brought under control as soon as possible. I hope the situation is brought under control as soon as possible.