Cold

Unfortunately I have caught a cold.

I have a sore throat and a headache, and feel a chill.

So today I will talk about trivia about a cold.

More than 90% of common colds are caused by virus infection.

The number of virus types is more than 800, and medicines that suppress these viruses hasn't been developed yet.

Doctors prescribe might medicines for you, but they only have an effect to suppress the symptoms.

Since such medicines have also adverse effects, many doctors and pharmacists heal on its own when they catch a cold.

Incidentally, if you can develop a specific medicine for colds, no doubt you win the Nobel Prize.

風邪

風邪をひいてしまいました。

喉と頭が痛く、悪寒がします。

今日は、風邪についての雑学を少し話そうと思います。

風邪は9割以上がウイルス感染によるものです。

ウイルスの種類は800以上にのぼり、これらウイルスを抑える薬は未だに存在しません。

我々が病院で処方してもらう薬は、風邪の症状を抑える効果しかありません。

風邪薬には副作用もあるため、多くの医師や薬剤師が風邪にかかった際は、薬に頼らず自然に治癒するのを待つそうです。

もし風邪の特効薬を開発することができたら、ほぼ確実にノーベル賞をもらえるようです。

• Cold
• Feeling sick

• Unfortunately I have caught a cold.
• This sentence is perfect! No correction needed!

• I have a sore throat and a headache, and feel a chill.
• This sentence is perfect! No correction needed!

• So today I will talk about trivia about a cold.
• So today I will write something about the common cold.

• More than 90% of common colds are caused by virus infection.
• This sentence is perfect! No correction needed!

• The number of virus types is more than 800, and medicines that suppress these viruses hasn't been developed yet.
• The number of virus types is more than 800, and tablets that suppress these viruses haven't been developed yet.

• Doctors prescribe might medicines for you, but they only have an effect to suppress the symptoms.
• Doctors might prescribe you tablets, but they only suppress the symptoms.

• Since such medicines have also adverse effects, many doctors and pharmacists heal on its own when they catch a cold.
• Since such tablets also have adverse effects, many doctors and pharmacists do not use them and wait for their cold to heal on its own when they catch a cold.

• Incidentally, if you can develop a specific medicine for colds, no doubt you win the Nobel Prize.
• Incidentally, if you can develop a specific medicine for the common cold, no doubt you will win the Nobel Prize.

• Cold
• Cold Feeling Sick

  Saying "Cold" could mean a lot of things (like how it's cold outside, etc.)

• Unfortunately I have caught a cold.
• This sentence is perfect! No correction needed!

• I have a sore throat and a headache, and feel a chill.
• This sentence is perfect! No correction needed!

• More than 90% of common colds are caused by virus infection.
• More than 90% of common colds are caused by viruses virus infection.

  The way you said it wasn't wrong, but it didn't sound natural.

• The number of virus types is more than 800, and medicines that suppress these viruses hasn't been developed yet.
• The number of viruses numbers greater virus types is more than 800, and medicine to medicines that suppress them haven't these viruses hasn't been developed yet.

• Doctors prescribe might medicines for you, but they only have an effect to suppress the symptoms.
• Doctors might prescribe medicine to might medicines for you, but they only have an effect to suppress the symptoms.

• Since such medicines have also adverse effects, many doctors and pharmacists heal on its own when they catch a cold.
• Since they such medicines have also adverse effects, many doctors and pharmacists wait until their body heals on its own heal on its own when they catch a cold.

  You don't need to mention the medicine again because it was mentioned recently.

• Incidentally, if you can develop a specific medicine for colds, no doubt you win the Nobel Prize.
• Incidentally, if you could can develop a specific medicine for the common cold colds, no doubt you would win a the Nobel Prize.

  Since the outcome isn't guaranteed, you should use the conditional tense here.