Investigation of the Effectiveness of CoronaVac Vaccine in Cancer Patients With Active Chemotherapy and Comparison With Healthy People.

Inclusion Criteria: * Group 1 1. 18 years old and above 2. Having completed two doses of CoronoVac vaccine on time 3. Those with a pathological diagnosis of breast cancer or lung cancer 4. Being the first dose of vaccine during active chemotherapy period 5. Ecog performance score 0-1 6. Patients who signed the informed voluntary consent form * Group 2 1. Over 18 years old 2. Ecog performance score is 0-1 3. Those who have completed 2 doses of coronovac vaccine within the recommended period 4. Volunteer who signed the informed consent form Exclusion Criteria: * For all groups 1. Being confirmed or suspected covid-19 before vaccination 2. Symptomatic covid-19 infection 3. Being addicted to alcohol or drugs 4. Having a fever of 37.8 ° C as a suspect before vaccination 5. Aspleni