1. study populations #1 and #2: according to the investigator's opinion, significant acute or chronic, uncontrolled medical or neuropsychiatric illness. acute disease is defined as presence of any moderate or severe acute illness with or without a fever within 48 hours prior to the screening (visit 1) and/or vaccination visit (visit 2). 'uncontrolled' is defined as: - requiring a new medical or surgical treatment during the three months prior to study vaccine administration; - requiring any significant change in a chronic medication (i.e. drug, dose, frequency) during the three months prior to study vaccine administration due to uncontrolled symptoms or drug toxicity unless the innocuous nature of the medication change meets the criteria outlined in inclusion criterion no. 5 (study population #1) or no. 8 (study population #2) and is appropriately justified and documented by the investigator. investigator discretion is permitted with this exclusion criterion and must be carefully and fully documented in the source documents; 2. study populations #1 and #2: any chronic medical condition associated with elevated risk of severe outcomes of covid-19, including obesity, diabetes (type i/ii), significant cardiovascular or respiratory disease including asthma, chronic renal failure, disorders of bleeding/coagulation, chronic inflammatory or autoimmune conditions, immunosuppressive conditions (including hiv), and hypertension; 3. study populations #1 and #2: any confirmed or suspected current immunosuppressive condition or immunodeficiency, including cancer, human immunodeficiency virus (hiv), hepatitis b or c infection (subjects with a history of cured hepatitis b or c infection without any signs of immunodeficiency at present time are allowed). investigator discretion is permitted with this exclusion criterion; 4. study populations #1 and #2: current autoimmune disease (such as rheumatoid arthritis, systemic lupus erythematosus, multiple sclerosis or narcolepsy). investigator discretion is permitted with this exclusion criterion, and subjects may be eligible to participate with appropriate written justification in the source document (i.e. subjects with a history of autoimmune disease who are disease-free without treatment for three years or more, or on stable thyroid replacement therapy, mild psoriasis [i.e. a small number of minor plaques requiring no systemic treatment], etc.); 5. study populations #1 and #2: administration of any medication or treatment that may alter the vaccine immune responses, such as: - systemic glucocorticoids at a dose exceeding 10 mg of prednisone (or equivalent) per day for more than seven consecutive days or for 10 or more days in total, within one month prior to the vaccination visit (visit 2). inhaled, nasal, ophthalmic, dermatological, and other topical glucocorticoids are permitted; - cytotoxic, antineoplastic, or immunosuppressant drugs - within 36 months prior to vaccination (visit 2); - any immunoglobulin preparations or blood products, blood transfusion - within 6 months prior to vaccination (visit 2); 6. study population #3: acute disease defined as presence of any moderate or severe acute illness with or without a fever within 48 hours prior to the screening (visit 1) and/or vaccination visit (visit 2); 7. administration of any vaccine within 14 days prior to vaccination (visit 2); planned administration of any vaccine during the study (up to day 28 of the study). immunization on an emergency basis during the study will be evaluated on case-by-case basis by the investigator; 8. administration of any other sars-cov-2 / covid-19, or other experimental coronavirus vaccine at any time prior to or during the study; 9. use of any investigational or non-registered product within 30 days or 5 half-lives, whichever is longer, prior to vaccination (visit 2) or planned use during the study period. subjects who are in a prolonged post-administration observation period of another investigational or marketed drug clinical study, for which there is no ongoing exposure to the investigational or marketed product and all scheduled on-site visits are completed, will be allowed to take part in this study, if all other eligibility criteria are met; 10. have a rash, dermatological condition, tattoos, muscle mass, or any other abnormalities at injection site that may interfere with injection site reaction rating. investigator discretion will be permitted with this exclusion criterion; 11. use of any prescription antiviral drugs with the intention of covid-19 prophylaxis, including those that are thought to be effective for prevention of covid-19 but have not been licensed for this indication, within one month prior to vaccination (visit 2); 12. use of prophylactic medications (e.g. antihistamines [h1 receptor antagonists], nonsteroidal anti-inflammatory drugs [nsaids], systemic and topical glucocorticoids, non-opioid and opioid analgesics) within 24 hours prior to the vaccination (visit 2) to prevent or pre-empt symptoms due to vaccination; 13. history of a serious allergic response to any of the constituents of covlp including as03; 14. history of a documented anaphylactic reactions to plants or plant components (including tobacco, fruits and nuts); 15. family history of narcolepsy; 16. subjects with a history of guillain-barré syndrome; 17. study populations #1 and #3: any female subject who has a positive or doubtful pregnancy test result prior to vaccination or who is lactating; 18. subjects identified as an investigator or employee of the investigator or clinical site with direct involvement in the proposed study, or identified as an immediate family member (i.e. parent, spouse, natural or adopted child) of the investigator or employee with direct involvement in the proposed study, or any employees of medicago

1. study populations #1 and #2: according to the investigator's opinion, significant acute or chronic, uncontrolled medical or neuropsychiatric illness. acute disease is defined as presence of any moderate or severe acute illness with or without a fever within 48 hours prior to the screening (visit 1) and/or vaccination visit (visit 2). 'uncontrolled' is defined as: - requiring a new medical or surgical treatment during the three months prior to study vaccine administration; - requiring any significant change in a chronic medication (i.e. drug, dose, frequency) during the three months prior to study vaccine administration due to uncontrolled symptoms or drug toxicity unless the innocuous nature of the medication change meets the criteria outlined in inclusion criterion no. 5 (study population #1) or no. 8 (study population #2) and is appropriately justified and documented by the investigator. investigator discretion is permitted with this exclusion criterion and must be carefully and fully documented in the source documents; 2. study populations #1 and #2: any chronic medical condition associated with elevated risk of severe outcomes of covid-19, including obesity, diabetes (type i/ii), significant cardiovascular or respiratory disease including asthma, chronic renal failure, disorders of bleeding/coagulation, chronic inflammatory or autoimmune conditions, immunosuppressive conditions (including hiv), and hypertension; 3. study populations #1 and #2: any confirmed or suspected current immunosuppressive condition or immunodeficiency, including cancer, human immunodeficiency virus (hiv), hepatitis b or c infection (subjects with a history of cured hepatitis b or c infection without any signs of immunodeficiency at present time are allowed). investigator discretion is permitted with this exclusion criterion; 4. study populations #1 and #2: current autoimmune disease (such as rheumatoid arthritis, systemic lupus erythematosus, multiple sclerosis or narcolepsy). investigator discretion is permitted with this exclusion criterion, and subjects may be eligible to participate with appropriate written justification in the source document (i.e. subjects with a history of autoimmune disease who are disease-free without treatment for three years or more, or on stable thyroid replacement therapy, mild psoriasis [i.e. a small number of minor plaques requiring no systemic treatment], etc.); 5. study populations #1 and #2: administration of any medication or treatment that may alter the vaccine immune responses, such as: - systemic glucocorticoids at a dose exceeding 10 mg of prednisone (or equivalent) per day for more than seven consecutive days or for 10 or more days in total, within one month prior to the vaccination visit (visit 2). inhaled, nasal, ophthalmic, dermatological, and other topical glucocorticoids are permitted; - cytotoxic, antineoplastic, or immunosuppressant drugs - within 36 months prior to vaccination (visit 2); - any immunoglobulin preparations or blood products, blood transfusion - within 6 months prior to vaccination (visit 2); 6. study population #3: acute disease defined as presence of any moderate or severe acute illness with or without a fever within 48 hours prior to the screening (visit 1) and/or vaccination visit (visit 2); 7. administration of any vaccine within 14 days prior to vaccination (visit 2); planned administration of any vaccine during the study (up to day 28 of the study). immunization on an emergency basis during the study will be evaluated on case-by-case basis by the investigator; 8. administration of any other sars-cov-2 / covid-19, or other experimental coronavirus vaccine at any time prior to or during the study; 9. use of any investigational or non-registered product within 30 days or 5 half-lives, whichever is longer, prior to vaccination (visit 2) or planned use during the study period. subjects who are in a prolonged post-administration observation period of another investigational or marketed drug clinical study, for which there is no ongoing exposure to the investigational or marketed product and all scheduled on-site visits are completed, will be allowed to take part in this study, if all other eligibility criteria are met; 10. have a rash, dermatological condition, tattoos, muscle mass, or any other abnormalities at injection site that may interfere with injection site reaction rating. investigator discretion will be permitted with this exclusion criterion; 11. use of any prescription antiviral drugs with the intention of covid-19 prophylaxis, including those that are thought to be effective for prevention of covid-19 but have not been licensed for this indication, within one month prior to vaccination (visit 2); 12. use of prophylactic medications (e.g. antihistamines [h1 receptor antagonists], nonsteroidal anti-inflammatory drugs [nsaids], systemic and topical glucocorticoids, non-opioid and opioid analgesics) within 24 hours prior to the vaccination (visit 2) to prevent or pre-empt symptoms due to vaccination; 13. history of a serious allergic response to any of the constituents of covlp including as03; 14. history of a documented anaphylactic reactions to plants or plant components (including tobacco, fruits and nuts); 15. family history of narcolepsy; 16. subjects with a history of guillain-barré syndrome; 17. study populations #1 and #3: any female subject who has a positive or doubtful pregnancy test result prior to vaccination or who is lactating; 18. subjects identified as an investigator or employee of the investigator or clinical site with direct involvement in the proposed study, or identified as an immediate family member (i.e. parent, spouse, natural or adopted child) of the investigator or employee with direct involvement in the proposed study, or any employees of medicago