Bacteria Type of antigen in vaccine Nanoparticle composition Diseases Outcomes Ref. Mycobacterium tuberculosis Esat-6 three T cell epitopes (Esat-6/3e) and fms-like tyrosine kinase 3 ligand (FL) genes (termed Esat-6/3e-FL) Chitosan Tuberculosis (i) Eliciting higher levels of IFN-γ and IL-12 [22 ] (ii) Increasing the expression levels of T-bet mRNA and protein (iii) Inducing a stronger Th1 response (iv) Remarkably increasing immunological and defensive effects (v) Increasing the number of CD3+ cells Mycobacterium tuberculosis Mycobacterium lipids Chitosan Tuberculosis (i) Inducing the production of Th1 and Th2 cytokines [23 ] (ii) Inducing the production of higher levels of IgG, IgG1, IgG2, and IgM (iii) Remarkably inducing the activation of γδ -T cells in the lymph nodes (iv) Substantially increasing CD8+ cells rather than CD4+ cells (v) Presence in both the lymph nodes and spleen cells Mycobacterium tuberculosis New DNA plasmid encoding eight HLA-A 0201-restricted T -cell epitopes Chitosan Tuberculosis (i) Maturation of dendritic cells (DCs) [24 ] (ii) Inducing the secretion of high levels of IFN-γ by T cells Vibrio cholerae OmpW proteinChitosan Cholerae (i) Increasing IgG and IgA immunoglobulins levels [25 ] Vibrio cholerae LPS Chitosan Cholerae (i) Inducing high levels of IgG and IgA antibodies in the sera and lavage fluid [26 ] Shigella flexneri MxiH antigenChitosan Shigellosis (i) Improving the secretion of IgG and IgA [27 ] (ii) Increasing the levels of IL-4 and IFN-γ Entrohemorragic Esherichia coli (EHEC )rEIT (EspA , Intimin , Tir ) Chitosan Entrohemorragic Esherichia coli (EHEC) infections (i) Decreasing symptoms associated with EHEC infections [28 ] (ii) Prompting robust humoral and mucosal immune reactions (iii) Protecting mice from live EHEC O157 : H7 (iv) Reducing adhesion properties of E. coli O157 : H7 in vitro Escherichia coli O157 : H7 EspA (E ), intimin (I ), Tir (T ) and Stx2 toxinChitosan Haemorrhagic colitis (HC) and haemorrhagic uremic syndrome (HUS) (i) Decreasing the adhesion ratio of pre-treated E. coli O157 : H7 [29 ] (ii) Significantly reducing bacterial colonization and excretion (iii) Inducing robust humoral and mucosal responses Acinetobacter baumannii Outer membrane protein Chitosan Nosocomial infections (i) Increasing the concentration of cytokines (IL-2, IL-6, IFN-γ ) and antibodies titer [30 ] (ii) Increasing cellular and humoral immunogenicity and stimulating a balanced Th1/Th2 response (iii) Increasing total leukocytes and differential leukocytes Campylobacter jejuni pCAGGS-flaA Chitosan Traveller’s disease Guillain-Barré syndrome (GBS) (i) Improving serum levels of anti-C. jejuni IgG and intestinal mucosal IgA antibodies [31 ] (ii) Declining bacterial expulsion Salmonella Outer membrane proteins (OMPs) and flagellin (F) protein Chitosan Salmonellosis (i) Upregulating TLRs, and Th1 and Th2 cytokines mRNA expression [32 ] (ii) Improving immune reactions, systemic IgY and mucosal IgA antibodies reaction in chickens (iii) Decreasing problems associated with Salmonella load in vaccinated chickens Salmonella enterica serovar enteritidis Outer membrane proteins (OMP) and flagellin (FLA) Chitosan Salmonellosis (i) Inducing substantial immune responses [33 ] (ii) Ag-specific splenocyte multiplication (iii) Improving systemic antibody response and the frequency of IFNγ -producing T cells (iv) Upregulating mRNA levels of TLR 2 and TLR 4 as well as IL-4 and IL-10 cytokines Chlamydia trachomatis Recombinant MOMP DNA (DMOMP) Chitosan Sexually transmitted infection (i) Improving in vivo presentation and expression of DMOMP in mice [34 ] (ii) Stabilizing and protecting against enzymatic digestion Clostridium tetani Tetanus toxoid (TT) PEG-PLA Tetanus (i) Inducing a long-lasting antibody (IgA, IgG levels) response [35 ] Chlamydia trachomatis A peptide obtained from the recombinant major outer membrane protein (rMOMP) of Chlamydia trachomatis PLGA Sexually transmitted disease (i) Increasing CD4+ and CD8+ T cells number [36 ] (ii) Inducing higher serum levels of IgG, IgG2a (Th1), and IgG1 (Th2) (iii) Increasing CD4+ and CD8+ T cell subsets number (iv) Inducing more cytokines and chemokines: rMOMP-specific interferon-gamma (Th1) and interleukin (IL)-12p40 (Th1/Th17) than IL-4 and IL-10 (Th2) cytokines Group A Streptococcus A vaccine candidate based on lipopeptide (LCP-1) PLGA Group A Streptococcus (GAS) infections (i) Enhancing antigen trapping and APCs [37 ] (ii) Maturation (iii) Improving the levels of J14-specific salivary mucosal IgA and systemic IgG antibodies titers Pseudomonas aeruginosa Detoxified LPS (D-LPS) PLGA Nosocomial infections (i) Stimulating humoral immune response [38 ] (ii) Declining the spread and proliferation of bacteria and killing opsonized bacteria Bacillus anthracis Protective antigen domain 4 (PAD4) PLGA Anthrax (i) Increasing IgG1 and IgG2a responses [39 ] (ii) Producing a Th1/Th2 response and a Th2 response by PAD4 (iii) Producing high levels of IL-4 and IFN-γ Brucella melitensis Oligopolysaccharide (OPS) PLGA Fever of Malta (i) Elevating the total IgG and IgM antibody titers [40 ] (ii) Stimulating well-ordered opsonophagocytosis of Brucella (iii) Exhibiting a high level of protection in challenge assay compared to other groups Pseudomonas aeruginosa Exotoxin A PLGA Cystic fibrosis (i) Adequate immunogens for inducing humoral and cellular immunogenicity [41 ] (ii) Reducing bacterial load in the spleens after challenge (iii) Substantially inducing higher secretion of INF-γ , TNF-α , IL-4, and IL-17A cytokines as well as IgG responses Brucella abortus rL7/L12 ribosomal protein PLGA Brucellosis (i) Producing particular Brucella Ag-specific humoral and cellular reactions [42 ] (ii) Inducing high IgG antibody titers, IgG1 as the predominant subclass (iii) Identifying a mixed Th1/Th2 response based on IgG1/2a ratio (iv) Recording Th1 cytokines particularly IFN-γ (v) Stimulating inflammatory responses necessary for combating Brucella infection (vi) Decreasing CFU of splenic bacteria Burkholderia Cenocepacia OMP antigen derived Nanoemulsion Cystic fibrosis (i) Inducing the secretion of higher levels of IgG and mucosal IgA [43 ] Bacillus anthracis Recombinant Bacillus anthracis protective antigen (rPA) Nanoemulsion Anthrax (i) Secreting high serum levels of antibodies neutralizing lethal toxin in mice and guinea [44 ] (ii) Elevating the expression of IFN-γ , TNF-α , and IL-2 (iii) rPA-NE based antigen-specific Th1-type polarization of cellular responses (iv) Eliciting high serum levels of anti-PA IgG and bronchial anti-PA IgA. (IgG2a and IgG2b were more than IgG1) Group A Streptococcus Lipid-core peptide-1 Nanoliposome GAS infections (i) Inducing higher titers of Ag-specific mucosal IgA and systemic IgG [45 ] Helicobacter pylori Fusion peptide CtUBE of cholera toxin B subunit and Helicobacter pylori urease B subunit epitope Liposome H. pylori infection(i) Elevating the serum levels of specific anti-urease IgG and mucosal IgA [46 ] (ii) Elevating the levels of IFN-γ Avian pathogenic Escherichia coli (APEC) Inactivated avian pathogenic E. coli vaccine (APEC) Liposome Avian colibacillosis (i) Elevating mucosal and serum antibodies [47 ] (ii) Decreasing bacteria in blood Group A streptococcus Lipopeptide Liposome GAS infections (i) Mediating both mucosal and systemic immunity, IgA and IgG (IgG1 and IgG2a) [48 ] (ii) Inducing prolonged immunity with high levels of antibodies (IgA and IgG) detected even five months’ postvaccination Yersinia pestis Formaldehyde-killed whole cell KWC Y. pestis Liposome Plague (i) Increasing IgA and IgG levels in mucosal secretions [49 ] (ii) Increasing specific cells secreting antibody in the lungs (iii) Increasing Ag-specific proliferative responses and IFN-γ -producing cells (iv) Improving the spleens of mice immunized against an intranasal Y . pestis challenge Enterohemorrhagic Escherichia coli (EHEC )Putative outer membrane protein (LomW ) and (EscC ) structural type III secretion system protein Gold nanoparticles Enterohemorrhagic infection (i) Elevating IgG and IgA titers in serum and feces, respectively [50 ] (ii) Decreasing the attachment to human intestinal epithelial cells (iii) Inducing Ag-specific bactericidal properties in serum, engaging the classical complement pathway Francisella tularensis Glycosylated protein complex Gold nanoparticles Tularemia (i) Increasing the protection and high specific antibodies titers [51 ] Burkholderia mallei B. thailandensis E264 lipopolysaccharide (LPS) with Hc fragment of tetanus toxinGold nanoparticles Glanders (i) Increasing the secretion of IgG1, IgG2a, and IgM in mice combating with B. mallei [52 ] (ii) Enhancing exposure of LPS to B memory cells Clostridium tetani Tetanus toxoid Gold nanoparticles Tetanus (i) Significantly inducing higher mucosal response following oral administration [53 ] Clostridium botulinum Recombinant binding domain BoNT/E Gold nanoparticles Botulism (i) Inducing high titers of antibody and immune response [54 ] Pseudomonas aeruginosa N -terminal domains of P. aeruginosa flagellinGold nanoparticles Nosocomial infections (i) Eliciting higher titers of anti-flagellin (1–161) antibodies [55 ] Staphylococcus aureus Bacterial extracellular vesicles (EVs ) coating indocyanine green (ICG ) MSN S. aureus infections(i) Stimulating DCs maturity and enhancing the proteasome-dependent antigen presenting pathway through simplifying endolysosomal escape, promoting proteasome activity, and upregulating MHC-I expression [56 ] (ii) Promoting CD8+ T cell responses while promoting CD4+ T cell responses and humoral immunity (iii) Facilitating vaccine delivery from the injection site into lymph nodes Vibrio cholerae Recombinant cholera toxin subunit B MSN Cholerae (i) Significantly inducing mucosal immune responses [57 ] (ii) Inducing more efficiently whole immune responses in challenge trials Mycobacterium avium subsp. paratuberculosis Whole cell lysate (PAN-Lysate ) and culture filtrate (PAN-Cf ) of M. paratuberculosis Polyanhydride nanoparticles (PAN) Johne’s disease (JD) (i) Elevating the levels of Ag-specific T cell responses postimmunization [58 ] (ii) Increasing the number of CD8+ T cells secreting cytokines (IFN-γ , IL-2, TNF-α ) Salmonella enterica serovar enteritidis Outer membrane proteins (OMPs ) and flagellar (F ) protein Polyanhydride nanoparticle (PAN) Salmonellosis (i) Eliciting OMPs-specific IgG responses and the production of Th1 cytokine IFN-γ in the serum [59 ] (ii) Increasing CD8+/CD4+ cell ratio in the spleen, promoting OMPs-specific lymphocyte multiplication (iii) Increasing the genes expression of TLR2 and -4, TGF-β , and IL-4 cytokines Streptococcus pneumoniae Pneumococcal surface protein A (PspA ) Polyanhydride nanoparticle (PAN) Pneumonia (i) Inducing an anti-PspA antibody with high titer and high avidity [60 ]