Regardless of what we want to believe, no COVID-19 vaccine is able to grant 100% immunity. The manufacturers admitted it from the start, although not necessarily directly. But when you say that a vaccine is only about 95% effective, it’s obvious that there’s a small chance for someone to still get infected with the coronavirus, although he has chosen to get vaccinated.
If you develop a little fever, a headache, a runny nose, a cough, or joint aches, you’re obviously tempted to say that you have only caught a cold. Everybody gets a cold once in a while, so why bother worrying, right? Actually, we don’t have to think that way at all, regardless of how tempting it may be. Cathing the SARS-CoV-2 virus can also imply infecting others afterwards. And the virus doesn’t give a single spike if you didn’t have that intention at all.
Be precautious, although you’ve been vaccinated for COVID
According to parade.com, there’s a list of COVID symptoms you can still develop although you’ve been vaccinated for the pandemic disease.
If you get COVID, although you’re vaccinated, you can have any of the same symptoms that a person who wasn’t vaccinated can have.

You could experience symptoms like these:
• Cough
• Nausea
• Nasal congestion
• Fatigue
• Dizziness
• Chills
• Fever
• Headache
• Muscle aches
• Loss of taste or smell
• Diarrhoea
What to do next if you experience such symptoms? Simple: first of all, you should get tested for COVID.
With the highly-transmissible Delta variant of COVID spreading and accounting for 83 percent of the infections with the SARS-CoV-2 virus in the US by the end of July, according to the CDC’s COVID Data Tracker, there’s no telling exactly how effective the vaccines are against the new strain.