Are corona completely safe after vaccination?

The Saudi Ministry of Health says that after taking the corona vaccine, it is not possible to stop taking precautions because the vaccine recipient, although having a strong immune system, does not mean that he can transmit the corona virus to others.

The Ministry of Health was asked on Twitter by a person, "Are vaccines completely safe from corona?"

According to SABQ Web, in response to a question, the Ministry of Health said, "Overall, the vaccine boosts the human body's immune system and produces antibodies against the corona virus, which protects the body from the virus." However, this does not mean that the coronavirus cannot be transmitted from person to person through vaccination, so precautions must be taken to prevent the virus from being transmitted.

Research on the corona virus has shown that the virus is highly transmitted from person to person, while the virus invades the human respiratory system and is transmitted very rapidly by human hands. Therefore, experts constantly recommend to keep hands clean or sanitized.

Responding to another question on Twitter about the corona vaccine, the Ministry of Health said that there is no harm in delaying the second dose at the prescribed time after taking one dose of the vaccine.

It should be noted that a person had discovered from the Ministry of Health that he had taken the first dose of the vaccine and due to some reasons could not get the second dose on time. Will the effect of the first dose be lost in case of delay?